v0.40.0: Rhodes synth, 74 audio demos, improved percussion

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Louder snares in marching demo (volume 1.5 to compensate ensemble/8)
2026-06-05 23:00:20 +00:00 · 2026-03-29 17:22:43 -04:00 · 2026-03-29 16:59:11 -04:00 · 2026-03-29 16:55:09 -04:00 · 2026-03-29 16:53:00 -04:00 · 2026-03-29 16:51:41 -04:00
92 changed files with 3304 additions and 282 deletions
@@ -2,6 +2,48 @@

 All notable changes to PyTheory are documented here.

+## 0.40.0
+
+- **Rhodes electric piano synth** — tine + tonebar + electromagnetic
+  pickup model. `electric_piano` preset now uses dedicated `rhodes_synth`
+  instead of FM
+- **73 audio demos in docs** — every synth, every drum pattern, every
+  code example with `play_score()` now has an embedded audio player
+- Idiomatic demos: harp arpeggiates, guitars strum, cello bows, sitar
+  drones, strings use ensemble
+- Trailing silence trimming on all audio exports
+- Raw waveform demos (no envelope) for classic waveforms
+
+## 0.39.3
+
+- **33 audio samples in documentation** — every `play_score()` example
+  now has an embedded stereo audio player. Covers quickstart, sequencing,
+  drums (all world percussion), playback, and cookbook.
+- **`docs/generate_audio.py`** — renders all doc examples to WAV
+- Numpy vectorization: cached time arrays, decay envelopes, drum hits;
+  vectorized piano harmonic synthesis
+- Fixed acid legato example (removed pad envelope, added proper 303 recipe)
+
+## 0.39.2
+
+- **Marching percussion** — snare, rimshot, and stick click sounds with
+  high-tension kevlar synthesis and woody-metallic rimshot crack
+- **`Part.flam()`**, **`Part.diddle()`**, **`Part.cheese()`** — marching
+  rudiment methods for any drum sound
+- **`Part ensemble=`** — duplicate voices with per-player timing tendencies
+  and micro pitch drift. Works on any Part (drumline, string section, choir).
+  `ensemble=20` for a full snare line, `ensemble=4` for a string quartet.
+- **Sympathetic resonance** — marching snare buzz builds up with repeated
+  hits, decays during rests (like real snare wire response)
+- **4 marching patterns** — march, cadence, paradiddle, roll
+- **Chakradar tabla pattern** — 16-beat tihai of tihais composition
+- Song #32: Snare Cadence (flams, diddles, cheese, triplets, 32nds)
+
+## 0.39.1
+
+- **Chakradar tabla pattern** — 16-beat tihai of tihais composition with
+  3 escalating phrases and a crescendo triplet finale
+
 ## 0.39.0

 - **Dropped `numeral` dependency** — Roman numeral helpers inlined,
@@ -0,0 +1,4 @@
+<audio controls style="width: 100%; margin: 0.5em 0 1.5em 0;">
+  <source src="{{ pathto('_static/audio/' + file, 1) }}" type="audio/wav">
+  Your browser does not support the audio element.
+</audio>
@@ -411,6 +411,10 @@ Acid House Track

   play_score(score)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/acid_house.wav" type="audio/wav"></audio>
+
 Dub Reggae with Delay Madness
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

@@ -443,6 +447,10 @@ Sparse notes into infinite echo:

   play_score(score)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/dub_reggae.wav" type="audio/wav"></audio>
+
 Jazz Ballad with Humanize
 ~~~~~~~~~~~~~~~~~~~~~~~~~~

@@ -480,6 +488,10 @@ The difference between a robot and a musician:

   play_score(score)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/jazz_ballad.wav" type="audio/wav"></audio>
+
 Song with Sections
 ~~~~~~~~~~~~~~~~~~~

@@ -513,6 +525,10 @@ Define once, arrange freely:
   play_score(score)
   score.save_midi("my_song.mid")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/song_sections.wav" type="audio/wav"></audio>
+
 Export Everything to MIDI
 ~~~~~~~~~~~~~~~~~~~~~~~~~~

@@ -10,7 +10,7 @@ the genre -- they tell the listener's body how to move before a single
 melodic note is played.

 PyTheory includes a complete drum system -- 51 synthesized percussion
-sounds, 85+ pattern presets across dozens of genres, and 30 fill presets.
+sounds, 95+ pattern presets across dozens of genres, and 30 fill presets.
 Every sound is generated from waveforms; no samples needed.

 Drum Sounds
@@ -121,10 +121,18 @@ MRIDANGAM_THA (101)

 **Djembe:** DJEMBE_BASS (102), DJEMBE_TONE (103), DJEMBE_SLAP (104)

-**Cajón:** CAJON_SLAP (109), CAJON_TAP (110)
+**Cajón:** CAJON_BASS (108), CAJON_SLAP (109), CAJON_TAP (110)

 **Metal Kit:** METAL_KICK (105), METAL_SNARE (106), METAL_HAT (107)

+**Marching Snare:** MARCH_SNARE (115), MARCH_RIMSHOT (116), MARCH_CLICK (118)
+
+**Quads (Tenors):** QUAD_1 (119), QUAD_2 (120), QUAD_3 (121), QUAD_4 (122),
+QUAD_SPOCK (123)
+
+**Marching Bass:** BASS_1 (124), BASS_2 (125), BASS_3 (126), BASS_4 (127),
+BASS_5 (80)
+
 Drum Synthesis
 --------------

@@ -241,6 +249,13 @@ Playing Patterns
   play_pattern(Pattern.preset("salsa"), repeats=4, bpm=180)
   play_pattern(Pattern.preset("afrobeat"), repeats=8, bpm=110)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/rock_beat.wav" type="audio/wav"></audio>
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/bossa_nova_pattern.wav" type="audio/wav"></audio>
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/salsa_pattern.wav" type="audio/wav"></audio>
+   <audio controls style="width:100%;margin:0.3em 0 1.5em"><source src="../_static/audio/afrobeat_pattern.wav" type="audio/wav"></audio>
+
 Fills
 -----

@@ -331,6 +346,10 @@ drum pattern and all named parts are mixed together by ``play_score()``:

   play_score(score)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/salsa_layered.wav" type="audio/wav"></audio>
+
 World Percussion
 ----------------

@@ -374,6 +393,12 @@ bayan (deep bass bends showcase), tabla call (dayan/bayan call-and-response).
   score = Score("4/4", bpm=80)
   score.drums("teental", repeats=4)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/tabla_teental.wav" type="audio/wav"></audio>
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/tabla_keherwa.wav" type="audio/wav"></audio>
+   <audio controls style="width:100%;margin:0.3em 0 1.5em"><source src="../_static/audio/tabla_chakradar.wav" type="audio/wav"></audio>
+
 Dhol
 ~~~~

@@ -391,6 +416,10 @@ energetic, and physically impossible to sit still to.
   score = Score("4/4", bpm=160)
   score.drums("bhangra", repeats=4)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/dhol.wav" type="audio/wav"></audio>
+
 Dholak
 ~~~~~~

@@ -408,6 +437,10 @@ music) and dholak folk (a general folk groove).
   score = Score("4/4", bpm=120)
   score.drums("qawwali", repeats=4)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/dholak.wav" type="audio/wav"></audio>
+
 Mridangam
 ~~~~~~~~~

@@ -426,6 +459,10 @@ and mridangam korvai (a rhythmic cadence pattern).
   score = Score("4/4", bpm=90)
   score.drums("adi talam", repeats=4)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/mridangam.wav" type="audio/wav"></audio>
+
 Djembe
 ~~~~~~

@@ -450,6 +487,10 @@ West African-style break).
   score = Score("4/4", bpm=120)
   score.drums("djembe", repeats=8, fill="djembe call", fill_every=4)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/djembe.wav" type="audio/wav"></audio>
+
 Metal Kit
 ~~~~~~~~~

@@ -474,6 +515,10 @@ roll → kick roll → alternating → crash ending).
   score = Score("4/4", bpm=200)
   score.drums("metal blast", repeats=8, fill="metal cascade", fill_every=4)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/metal_blast.wav" type="audio/wav"></audio>
+
 Cajón
 ~~~~~

@@ -496,6 +541,62 @@ bass-slap groove).
   score = Score("4/4", bpm=100)
   score.drums("cajon", repeats=8, fill="cajon flam", fill_every=4)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/cajon.wav" type="audio/wav"></audio>
+
+Marching Percussion
+~~~~~~~~~~~~~~~~~~~
+
+A full drumline — snare, quads (tenors), and pitched bass drums.
+Every sound is synthesized: kevlar snare heads, aluminum shell ting
+on the quads, felt-beater thwack on the basses.
+
+**Snare** -- 3 sounds: MARCH_SNARE (tight kevlar tap), MARCH_RIMSHOT
+(woody-metallic crack), MARCH_CLICK (stick click for count-offs).
+
+**Quads** -- 5 sounds: QUAD_1 through QUAD_4 (high to low pitched
+tenors) plus QUAD_SPOCK (rim click on the shell).
+
+**Bass drums** -- 5 pitched drums: BASS_1 (highest/smallest) through
+BASS_5 (lowest/biggest), each with a prominent felt-beater thwack.
+
+**6 patterns:** march (basic 4/4), cadence (8-beat street beat),
+march paradiddle, march roll (buzz crescendo), quad sweep (run across
+all 4 drums), quad groove, bass split (cascading across the line),
+bass unison (all 5 hit together), drumline (snare + quads + bass).
+
+**Rudiment methods:** ``Part.flam()``, ``Part.diddle()``, and
+``Part.cheese()`` for marching rudiments on any drum sound.
+
+**Ensemble rendering:** ``ensemble=N`` on any Part duplicates the
+voice with per-player timing tendencies and micro pitch drift.
+``ensemble=8`` for a snare line, ``ensemble=20`` for a massive section.
+
+.. code-block:: python
+
+   # Full drumline with ensemble
+   snares = score.part("snares", synth="sine", volume=0.9,
+                       reverb=0.2, ensemble=8)
+   quads = score.part("quads", synth="sine", volume=0.5,
+                      reverb=0.2, ensemble=4)
+   basses = score.part("basses", synth="sine", volume=0.55,
+                       reverb=0.2, ensemble=5)
+
+   snares.flam(DrumSound.MARCH_SNARE, Duration.QUARTER, velocity=120)
+   snares.diddle(DrumSound.MARCH_SNARE, Duration.EIGHTH, velocity=60)
+
+   # Or use patterns
+   score.drums("drumline", repeats=4)
+
+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/march_snare.wav" type="audio/wav"></audio>
+
+**Sympathetic resonance:** The marching snare builds up snare wire
+buzz as hits accumulate, and the buzz decays during rests — just like
+a real drum.
+
 MIDI Export
 -----------

@@ -66,6 +66,10 @@ the mix louder and punchier:
       chords.add(Chord.from_symbol(sym), Duration.WHOLE)
   play_score(score)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/playback_basic.wav" type="audio/wav"></audio>
+
 The render pipeline respects the Score's ``temperament`` and
 ``reference_pitch`` settings, so Baroque or microtonal scores play back
 at the correct tuning:
@@ -143,48 +143,34 @@ chords, melody, bass, each with their own synth and effects:

 .. code-block:: python

-   from pytheory import Score, Pattern, Key, Duration, Chord
+   from pytheory import Score, Key, Duration
   from pytheory.play import play_score

-   score = Score("4/4", bpm=140)
-   score.drums("bossa nova", repeats=4)
+   score = Score("4/4", bpm=120)
+   score.drums("rock", repeats=8, fill="rock", fill_every=4)

-   chords = score.part(
-       "chords",
-       synth="fm",
-       envelope="pad",
-       reverb=0.4,
-   )
-   lead = score.part(
-       "lead",
-       synth="saw",
-       envelope="pluck",
-       delay=0.3,
-       lowpass=3000,
-       humanize=0.2,
-   )
-   bass = score.part(
-       "bass",
-       synth="sine",
-       lowpass=500,
-   )
+   piano = score.part("piano", instrument="piano", reverb=0.3)
+   lead = score.part("lead", synth="saw", envelope="pluck",
+                     delay=0.2, reverb=0.2, lowpass=4000)
+   bass = score.part("bass", synth="triangle", lowpass=900)

-   key = Key("A", "minor")
-   for chord in key.progression("i", "iv", "V", "i"):
-       chords.add(chord, Duration.WHOLE)
-       chords.add(chord, Duration.WHOLE)
+   for chord in Key("G", "major").progression("I", "V", "vi", "IV") * 2:
+       piano.add(chord, Duration.WHOLE)

-   lead.arpeggio("Am", bars=2, pattern="updown", octaves=2)
-   lead.arpeggio("Dm", bars=2, pattern="updown", octaves=2)
-   lead.set(lowpass=5000, reverb=0.3)
-   lead.arpeggio("E7", bars=2, pattern="up", octaves=2)
-   lead.arpeggio("Am", bars=2, pattern="updown", octaves=2)
+   lead.add("D5", 1).add("B4", 0.5).add("D5", 0.5)
+   lead.add("G5", 1).add("E5", 1)
+   lead.add("D5", 0.5).add("B4", 0.5).add("A4", 1)
+   lead.add("G4", 2).rest(2)

-   for n in ["A2", "E2", "A2", "C3"] * 4:
-       bass.add(n, Duration.QUARTER)
+   for n in ["G2", "G2", "D2", "D2", "E2", "E2", "C2", "C2"] * 2:
+       bass.add(n, Duration.HALF)

   play_score(score)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/quickstart.wav" type="audio/wav"></audio>
+
 Export to Your DAW
 ------------------

@@ -161,6 +161,10 @@ Chords work just like tones — pass any ``Chord`` object:
   for chord in chords:
       score.add(chord, Duration.WHOLE)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/chords_basic.wav" type="audio/wav"></audio>
+
 .. code-block:: pycon

   >>> score.measures
@@ -244,6 +248,31 @@ Chords and Tone objects work the same way:
   for note in ["A2", "C3", "E3", "A2", "D2", "F2", "A2", "D2"]:
       bass.add(note, Duration.QUARTER)

+Polyphonic Hold
+---------------
+
+``Part.hold()`` adds a note without advancing the beat position —
+the next note starts at the *same* time. This enables polyphonic
+overlap on a single part: piano sustain, sitar drone under melody,
+guitar strum texture.
+
+.. code-block:: python
+
+   piano = score.part("piano", instrument="piano", reverb=0.3)
+
+   # Hold a C major chord for 8 beats
+   piano.hold("C3", Duration.WHOLE * 2, velocity=60)
+   piano.hold("E3", Duration.WHOLE * 2, velocity=55)
+   piano.hold("G3", Duration.WHOLE * 2, velocity=55)
+
+   # Melody plays simultaneously on top
+   for n in ["E4", "G4", "C5", "G4", "E4", "D4", "C4", "E4"]:
+       piano.add(n, Duration.QUARTER, velocity=80)
+
+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/piano_hold.wav" type="audio/wav"></audio>
+
 Arpeggiator
 ------------

@@ -292,6 +321,10 @@ Chain arpeggios through a progression:
   for sym in ["Cm", "Fm", "Abm", "Gm"]:
       lead.arpeggio(sym, bars=2, pattern="updown", octaves=2)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/arpeggio.wav" type="audio/wav"></audio>
+
 Combined with legato, glide, distortion, and a resonant lowpass, this
 produces the classic acid/trance arpeggiator sound.

@@ -322,12 +355,18 @@ portamento (pitch slides between notes):
   acid = score.part(
       "acid",
       synth="saw",
-       envelope="pad",
       legato=True,
       glide=0.04,
+       lowpass=3000,
+       lowpass_q=6.0,
+       distortion=0.3,
   )
   acid.add("C2", 0.25).add("C3", 0.25).add("G2", 0.25).add("C2", 0.25)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/legato_glide.wav" type="audio/wav"></audio>
+
 - ``legato``: If True, no envelope retrigger between notes (default False).
 - ``glide``: Portamento time in seconds (default 0, instant).
  0.03--0.05 = quick 303 slide, 0.1--0.2 = slow glide.
@@ -335,63 +374,51 @@ portamento (pitch slides between notes):
 Complete Example
 ----------------

-A full multi-part arrangement built from scratch — bossa nova with FM
-rhodes, triangle lead, and filtered bass:
+A full multi-part arrangement — rock beat with piano chords, saw
+lead, and filtered bass:

 .. code-block:: python

-   from pytheory import Score, Pattern, Key, Duration, Chord
+   from pytheory import Score, Key, Duration, Chord
   from pytheory.play import play_score

-   score = Score("4/4", bpm=140)
-   score.drums("bossa nova", repeats=4)
+   score = Score("4/4", bpm=120)
+   score.drums("rock", repeats=8, fill="rock", fill_every=4)

-   # FM rhodes with reverb
-   rhodes = score.part(
-       "rhodes",
-       synth="fm",
-       envelope="piano",
-       volume=0.3,
-       reverb=0.4,
-       reverb_decay=1.8,
-   )
+   # Piano chords with reverb
+   piano = score.part("piano", instrument="piano", volume=0.4, reverb=0.3)

-   # Triangle lead with delay
+   # Saw lead with delay
   lead = score.part(
-       "lead",
-       synth="triangle",
-       envelope="pluck",
-       volume=0.45,
-       delay=0.25,
-       delay_time=0.32,
-       delay_feedback=0.35,
-       reverb=0.2,
+       "lead", synth="saw", envelope="pluck", volume=0.4,
+       delay=0.2, delay_time=0.33, reverb=0.2, lowpass=3000,
   )

   # Filtered bass
-   bass = score.part(
-       "bass",
-       synth="sine",
-       envelope="pluck",
-       volume=0.45,
-       lowpass=600,
-   )
+   bass = score.part("bass", synth="triangle", envelope="pluck",
+                     volume=0.45, lowpass=1200)

-   for sym in ["Am", "Am", "Dm", "Dm", "E7", "E7", "Am", "Am"]:
-       rhodes.add(Chord.from_symbol(sym), Duration.WHOLE)
+   for chord in Key("G", "major").progression("I", "V", "vi", "IV") * 2:
+       piano.add(chord, Duration.WHOLE)

-   for n, d in [
-       ("E5", 0.67), ("D5", 0.33), ("C5", 0.67), ("B4", 0.33),
-       ("A4", 1), ("C5", 0.67), ("E5", 0.33), ("D5", 0.67), ("C5", 0.33),
-       ("A4", 1),
-   ]:
-       lead.add(n, d)
+   lead.add("D5", 1).add("B4", 0.5).add("D5", 0.5)
+   lead.add("G5", 1).add("E5", 1)
+   lead.add("D5", 0.5).add("B4", 0.5).add("A4", 1)
+   lead.add("G4", 2).rest(2)
+   lead.add("D5", 1).add("B4", 0.5).add("D5", 0.5)
+   lead.add("G5", 1).add("A5", 1)
+   lead.add("G5", 0.5).add("E5", 0.5).add("D5", 1)
+   lead.add("B4", 2).rest(2)

-   for n in ["A2", "E2", "A2", "C3", "D2", "A2", "D2", "F2"]:
-       bass.add(n, Duration.QUARTER)
+   for n in ["G2", "G2", "D2", "D2", "E2", "E2", "C2", "C2"] * 2:
+       bass.add(n, Duration.HALF)

   play_score(score)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/complete_rock.wav" type="audio/wav"></audio>
+
 Velocity
 --------

@@ -431,6 +458,10 @@ Pass ``articulation=`` to ``Part.add()``:
   piano.add("G4", Duration.QUARTER, articulation="accent")     # louder
   piano.add("C5", Duration.HALF, articulation="fermata")       # held longer

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/articulations.wav" type="audio/wav"></audio>
+
 What each articulation does:

 - **staccato** — plays ~40% of the note duration with a quick fade-out. Short and detached.
@@ -467,6 +498,10 @@ of notes instead of setting each one manually.
   piano.dynamics(["C4","E4","G4","C5"], Duration.QUARTER,
                  velocities=[50, 80, 110, 90])

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/dynamics.wav" type="audio/wav"></audio>
+
 Four methods:

 - **crescendo()** — linear velocity ramp from ``start_vel`` to ``end_vel``.
@@ -507,6 +542,53 @@ effects, and articulations for free. Use this for custom beats that
 don't fit a preset pattern, or for one-shot accent hits layered on
 top of a pattern.

+Rudiments — Flam, Diddle, Cheese
+---------------------------------
+
+Marching percussion rudiments as methods on any Part:
+
+.. code-block:: python
+
+   from pytheory import DrumSound
+
+   p = score.part("snares", synth="sine", volume=0.9)
+
+   # Flam: grace note + main hit (gap controls tightness)
+   p.flam(DrumSound.MARCH_SNARE, Duration.QUARTER, velocity=120)
+
+   # Diddle: two equal strokes in one note duration
+   p.diddle(DrumSound.MARCH_SNARE, Duration.EIGHTH, velocity=60)
+
+   # Cheese: flam + diddle combined
+   p.cheese(DrumSound.MARCH_SNARE, Duration.QUARTER, velocity=120)
+
+Ensemble
+--------
+
+Any Part can be rendered as an ensemble — multiple players with
+per-player timing tendencies and micro pitch drift:
+
+.. code-block:: python
+
+   # 8-player snare line
+   snares = score.part("snares", synth="sine", volume=0.9, ensemble=8)
+
+   # 20-player string section
+   strings = score.part("strings", instrument="string_ensemble", ensemble=20)
+
+   # Single player (default)
+   solo = score.part("solo", instrument="violin")
+
+Each ensemble voice gets a consistent timing personality (some rush,
+some drag) plus small per-note wobble, and slightly different tuning.
+The result sounds like a real section — together but alive.
+
+Solo snare, then an 8-player section plays the same pattern:
+
+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/ensemble.wav" type="audio/wav"></audio>
+
 Swing and Groove
 ----------------

@@ -622,6 +704,10 @@ Four interpolation curves:
   # Smooth reverb wash fading in and settling
   pad.ramp(over=Duration.WHOLE * 4, curve="ease_in_out", reverb=0.6)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="../_static/audio/filter_ramp.wav" type="audio/wav"></audio>
+
 ``ramp()`` generates automation points every quarter-beat by default.
 Set ``resolution=0.125`` for smoother curves (every 32nd note), or
 ``resolution=1.0`` for lighter automation (every beat).
@@ -37,6 +37,10 @@ building block of all other waveforms (Fourier's theorem).
   tone = Tone.from_string("C4", system="western")
   play(tone, synth=Synth.SINE)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_sine.wav" type="audio/wav"></audio>
+
 Sawtooth
 ~~~~~~~~

@@ -50,6 +54,10 @@ Named for its ramp shape.

   play(tone, synth=Synth.SAW)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_saw.wav" type="audio/wav"></audio>
+
 Triangle
 ~~~~~~~~

@@ -63,6 +71,10 @@ described as "woody" or "hollow."

   play(tone, synth=Synth.TRIANGLE)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_triangle.wav" type="audio/wav"></audio>
+
 Square
 ~~~~~~

@@ -76,6 +88,10 @@ pulse wave with a 50% duty cycle.

   play(tone, synth=Synth.SQUARE)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_square.wav" type="audio/wav"></audio>
+
 Extended Waveforms
 ------------------

@@ -98,6 +114,10 @@ the classic NES-style buzzy tone.

   lead = score.part("lead", synth="pulse", envelope="pluck")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_pulse.wav" type="audio/wav"></audio>
+
 FM Synthesis
 ~~~~~~~~~~~~

@@ -109,18 +129,24 @@ the electric piano in every Whitney Houston ballad, the bass in every
 Depeche Mode track, the bells in a thousand TV jingles. If you heard
 pop music in the 80s, you heard FM synthesis.

-**Use for:** electric piano (rhodes), bells, metallic leads, jazz chords.
+**Use for:** bells, metallic leads, glassy pads, DX7-style sounds.

 .. code-block:: python

-   rhodes = score.part(
-       "rhodes",
+   bells = score.part(
+       "bells",
       synth="fm",
-       envelope="piano",
+       envelope="bell",
+       fm_ratio=3.0,
+       fm_index=5.0,
       volume=0.3,
       reverb=0.4,
   )

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_fm.wav" type="audio/wav"></audio>
+
 Noise
 -----

@@ -142,6 +168,10 @@ Useful as a texture layer, a percussion source, or a wind/ocean effect.
       lowpass=2000,
   )

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_noise.wav" type="audio/wav"></audio>
+
 Ensemble Waveforms
 ------------------

@@ -174,6 +204,10 @@ supersaw.
       reverb=0.5,
   )

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_supersaw.wav" type="audio/wav"></audio>
+
 PWM Slow
 ~~~~~~~~

@@ -195,6 +229,10 @@ from Boards of Canada to Drake? PWM with a slow LFO.
       reverb=0.4,
   )

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_pwm_slow.wav" type="audio/wav"></audio>
+
 PWM Fast
 ~~~~~~~~

@@ -207,6 +245,10 @@ produces a natural chorus/vibrato effect built into the waveform itself.

   lead = score.part("lead", synth="pwm_fast", envelope="pluck", volume=0.5)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_pwm_fast.wav" type="audio/wav"></audio>
+
 ADSR Envelopes
 --------------

@@ -375,6 +417,10 @@ at musical levels. Warm, round, unmistakably organ.

   organ = score.part("organ", synth="organ_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_organ.wav" type="audio/wav"></audio>
+
 String Ensemble
 ~~~~~~~~~~~~~~~

@@ -386,6 +432,10 @@ more "wooden" than a raw saw wave.

   violin = score.part("violin", synth="strings_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_strings.wav" type="audio/wav"></audio>
+
 Dedicated Instrument Synths
 --------------------------

@@ -407,6 +457,28 @@ soundboard.

   piano = score.part("piano", synth="piano_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_piano.wav" type="audio/wav"></audio>
+
+Rhodes Electric Piano
+~~~~~~~~~~~~~~~~~~~~~
+
+The Fender Rhodes — a rubber-tipped hammer strikes a steel tine
+next to a tonebar, picked up by an electromagnetic pickup. Warm,
+bell-like, with a bright metallic attack that mellows into a
+singing sustain. The sound of jazz clubs, soul, and neo-soul.
+
+.. code-block:: python
+
+   rhodes = score.part("rhodes", synth="rhodes_synth")
+   # Or use the instrument preset (adds tremolo + chorus)
+   rhodes = score.part("rhodes", instrument="electric_piano")
+
+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_rhodes.wav" type="audio/wav"></audio>
+
 Bass Guitar Synth
 ~~~~~~~~~~~~~~~~~

@@ -416,6 +488,10 @@ Plucked string model with finger-damped harmonics and low-end warmth.

   bass = score.part("bass", synth="bass_guitar_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_bass_guitar.wav" type="audio/wav"></audio>
+
 Flute Synth
 ~~~~~~~~~~~~

@@ -426,6 +502,10 @@ overblowing behavior at higher velocities.

   flute = score.part("flute", synth="flute_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_flute.wav" type="audio/wav"></audio>
+
 Trumpet Synth
 ~~~~~~~~~~~~~

@@ -436,6 +516,10 @@ velocity, plus a characteristic brassy edge from shaped harmonics.

   trumpet = score.part("trumpet", synth="trumpet_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_trumpet.wav" type="audio/wav"></audio>
+
 Clarinet Synth
 ~~~~~~~~~~~~~~

@@ -446,6 +530,10 @@ characteristic hollow, woody tone.

   clarinet = score.part("clarinet", synth="clarinet_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_clarinet.wav" type="audio/wav"></audio>
+
 Oboe Synth
 ~~~~~~~~~~~

@@ -456,6 +544,10 @@ timbre.

   oboe = score.part("oboe", synth="oboe_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_oboe.wav" type="audio/wav"></audio>
+
 Marimba Synth
 ~~~~~~~~~~~~~

@@ -466,6 +558,10 @@ that emphasizes the fundamental.

   marimba = score.part("marimba", synth="marimba_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_marimba.wav" type="audio/wav"></audio>
+
 Harpsichord Synth
 ~~~~~~~~~~~~~~~~~

@@ -476,6 +572,10 @@ Plucked-string model with a bright, immediate attack and rapid decay

   harpsi = score.part("harpsi", synth="harpsichord_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_harpsichord.wav" type="audio/wav"></audio>
+
 Cello Synth
 ~~~~~~~~~~~

@@ -486,6 +586,10 @@ producing a rich, warm, sustained tone.

   cello = score.part("cello", synth="cello_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_cello.wav" type="audio/wav"></audio>
+
 Harp Synth
 ~~~~~~~~~~

@@ -496,6 +600,10 @@ modeling nylon strings on a resonant frame.

   harp = score.part("harp", synth="harp_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_harp.wav" type="audio/wav"></audio>
+
 Upright Bass Synth
 ~~~~~~~~~~~~~~~~~~

@@ -505,6 +613,10 @@ Pizzicato double bass with woody body resonance and a thumpy low end.

   bass = score.part("bass", synth="upright_bass_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_upright_bass.wav" type="audio/wav"></audio>
+
 Acoustic Guitar Synth
 ~~~~~~~~~~~~~~~~~~~~~

@@ -515,6 +627,10 @@ string decay.

   guitar = score.part("guitar", synth="acoustic_guitar_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_acoustic_guitar.wav" type="audio/wav"></audio>
+
 Electric Guitar Synth
 ~~~~~~~~~~~~~~~~~~~~~

@@ -525,6 +641,10 @@ than the acoustic, ready for effects processing.

   eguitar = score.part("eguitar", synth="electric_guitar_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_electric_guitar.wav" type="audio/wav"></audio>
+
 Sitar Synth
 ~~~~~~~~~~~~

@@ -535,6 +655,10 @@ bridge, producing a shimmering, metallic sustain.

   sitar = score.part("sitar", synth="sitar_synth")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_sitar.wav" type="audio/wav"></audio>
+
 Timpani Synth
 ~~~~~~~~~~~~~

@@ -547,6 +671,10 @@ Use ``Part.roll()`` for crescendo timpani rolls.
   timp = score.part("timp", synth="timpani_synth")
   timp.roll("C3", Duration.WHOLE, velocity_start=20, velocity_end=110)

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_timpani.wav" type="audio/wav"></audio>
+
 Saxophone Synth
 ~~~~~~~~~~~~~~~

@@ -558,6 +686,10 @@ mids, reed buzz, and brass body warmth. Four presets: ``saxophone``,

   sax = score.part("sax", instrument="tenor_sax")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_saxophone.wav" type="audio/wav"></audio>
+
 Pedal Steel Synth
 ~~~~~~~~~~~~~~~~~

@@ -568,6 +700,10 @@ and long sustain. Pairs naturally with spring reverb.

   steel = score.part("steel", instrument="pedal_steel")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_pedal_steel.wav" type="audio/wav"></audio>
+
 Theremin Synth
 ~~~~~~~~~~~~~~

@@ -578,6 +714,10 @@ Best used with legato and glide for continuous pitch.

   theremin = score.part("theremin", instrument="theremin")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_theremin.wav" type="audio/wav"></audio>
+
 Kalimba Synth
 ~~~~~~~~~~~~~

@@ -588,6 +728,10 @@ inharmonic overtones (modes at 1x, 2.92x, 5.4x).

   kalimba = score.part("kalimba", instrument="kalimba")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_kalimba.wav" type="audio/wav"></audio>
+
 Steel Drum Synth
 ~~~~~~~~~~~~~~~~

@@ -598,6 +742,10 @@ Inharmonic partials at 2.0x, 3.01x, 4.1x, 5.3x.

   pan = score.part("pan", instrument="steel_drum")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_steel_drum.wav" type="audio/wav"></audio>
+
 Accordion Synth
 ~~~~~~~~~~~~~~~

@@ -608,6 +756,10 @@ create natural beating. Bellows pressure swell modulates amplitude.

   acc = score.part("acc", instrument="accordion")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_accordion.wav" type="audio/wav"></audio>
+
 Didgeridoo Synth
 ~~~~~~~~~~~~~~~~

@@ -619,6 +771,10 @@ Best with cave reverb.

   didg = score.part("didg", instrument="didgeridoo")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_didgeridoo.wav" type="audio/wav"></audio>
+
 Bagpipe Synth
 ~~~~~~~~~~~~~

@@ -629,6 +785,10 @@ peaked around 3-7 (the piercing brightness). No dynamics — always ff.

   pipes = score.part("pipes", instrument="bagpipe")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_bagpipe.wav" type="audio/wav"></audio>
+
 Banjo Synth
 ~~~~~~~~~~~

@@ -639,6 +799,10 @@ nasal, ringy resonance with faster decay than guitar.

   banjo = score.part("banjo", instrument="banjo")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_banjo.wav" type="audio/wav"></audio>
+
 Mandolin Synth
 ~~~~~~~~~~~~~~

@@ -649,6 +813,10 @@ doubled unison strings. Bright, ringing, fast attack.

   mando = score.part("mando", instrument="mandolin")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_mandolin.wav" type="audio/wav"></audio>
+
 Ukulele Synth
 ~~~~~~~~~~~~~

@@ -659,6 +827,10 @@ softer attack than guitar, shorter sustain.

   uke = score.part("uke", instrument="ukulele")

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_ukulele.wav" type="audio/wav"></audio>
+
 Granular Synth
 ~~~~~~~~~~~~~~

@@ -688,6 +860,10 @@ Parameters (passed as synth kwargs):
 - ``source``: Base waveform — ``"saw"``, ``"sine"``, ``"triangle"``,
  ``"square"``, ``"noise"``.

+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.3em 0 0.5em"><source src="../_static/audio/synth_granular.wav" type="audio/wav"></audio>
+
 Analog Oscillator Drift
 ~~~~~~~~~~~~~~~~~~~~~~~~

@@ -46,23 +46,33 @@ it through your speakers, export MIDI, finish in your DAW:

 .. code-block:: python

-   from pytheory import Score, Pattern, Key, Duration, Chord
+   from pytheory import Score, Key, Duration
   from pytheory.play import play_score

-   score = Score("4/4", bpm=140)
-   score.drums("bossa nova", repeats=4)
+   score = Score("4/4", bpm=120)
+   score.drums("rock", repeats=8, fill="rock", fill_every=4)

-   chords = score.part("chords", synth="fm", envelope="pad", reverb=0.4)
-   lead = score.part("lead", synth="saw", envelope="pluck", delay=0.3)
-   bass = score.part("bass", synth="sine", lowpass=500)
+   piano = score.part("piano", instrument="piano", reverb=0.3)
+   lead = score.part("lead", synth="saw", envelope="pluck",
+                     delay=0.2, reverb=0.2, lowpass=4000)
+   bass = score.part("bass", synth="triangle", lowpass=900)

-   for chord in Key("A", "minor").progression("i", "iv", "V", "i"):
-       chords.add(chord, Duration.WHOLE)
+   for chord in Key("G", "major").progression("I", "V", "vi", "IV") * 2:
+       piano.add(chord, Duration.WHOLE)

-   lead.arpeggio("Am", bars=4, pattern="updown", octaves=2)
+   lead.add("D5", 1).add("B4", 0.5).add("D5", 0.5)
+   lead.add("G5", 1).add("E5", 1)
+   lead.add("D5", 0.5).add("B4", 0.5).add("A4", 1)
+   lead.add("G4", 2).rest(2)
+
+   for n in ["G2", "G2", "D2", "D2", "E2", "E2", "C2", "C2"] * 2:
+       bass.add(n, Duration.HALF)

   play_score(score)
-   score.save_midi("sketch.mid")
+
+.. raw:: html
+
+   <audio controls style="width:100%;margin:0.5em 0 1.5em"><source src="_static/audio/quickstart.wav" type="audio/wav"></audio>

 Or hear a randomly generated track from the command line — different
 every time::
@@ -543,7 +543,7 @@ def dub_kingston():
                      volume=0.6, pan=0.0, lowpass=400, lowpass_q=1.5,
                      humanize=0.2)
    siren = score.part("siren", synth="pwm_slow", envelope="pad",
-                       volume=0.15, pan=0.5,
+                       volume=0.15, pan=0.5, ensemble=4,
                       reverb=0.7, reverb_decay=3.0, reverb_type="cathedral",
                       lowpass=1200, detune=10)

@@ -1124,14 +1124,14 @@ def cinematic_showcase():
        bells.rest(Duration.WHOLE)

    # String ensemble — lush wide pad
-    strings = score.part("strings", instrument="string_ensemble",
+    strings = score.part("strings", instrument="string_ensemble", ensemble=8,
                         reverb=0.4, reverb_type="hall")
    strings.rest(Duration.WHOLE)
    for sym in ["Am", "F", "C", "G", "Dm", "Am", "E"]:
        strings.add(Chord.from_symbol(sym), Duration.WHOLE)

    # Cello — deep foundation
-    cello = score.part("cello", instrument="cello",
+    cello = score.part("cello", instrument="cello", ensemble=3,
                       reverb=0.3, reverb_type="hall")
    cello.rest(Duration.WHOLE)
    for n in ["A2", "F2", "C3", "G2", "D3", "A2", "E2"]:
@@ -1629,7 +1629,7 @@ def epic_bhairav():
    timp.add(Tone("Pa", octave=2, system=shruti), Duration.HALF, velocity=115)

    # Choir — bar 3
-    choir = score.part("choir", synth="vocal_synth", envelope="pad",
+    choir = score.part("choir", synth="vocal_synth", envelope="pad", ensemble=6,
                        detune=8, spread=0.4, reverb=0.4, reverb_type=REV, volume=0.2)
    for _ in range(2):
        choir.rest(Duration.WHOLE)
@@ -1651,7 +1651,7 @@ def epic_bhairav():
        bansuri.add(tone, dur, velocity=vel)

    # Cello — bar 3
-    cello = score.part("cello", instrument="cello", volume=0.22, reverb=0.4, reverb_type=REV)
+    cello = score.part("cello", instrument="cello", volume=0.22, reverb=0.4, reverb_type=REV, ensemble=3)
    for _ in range(2):
        cello.rest(Duration.WHOLE)
    for name, dur, vel in [
@@ -1677,7 +1677,7 @@ def epic_bhairav():

    # Strings — bar 13
    strings = score.part("strings", instrument="string_ensemble", volume=0.18,
-                          reverb=0.4, reverb_type=REV)
+                          reverb=0.4, reverb_type=REV, ensemble=10)
    for _ in range(12):
        strings.rest(Duration.WHOLE)
    for name, dur, vel in [("Sa", 4.0, 58), ("Ma", 4.0, 62), ("Pa", 4.0, 68), ("Sa", 4.0, 72)]:
@@ -1887,7 +1887,7 @@ def ascent():

    # 3: SURFACING (5-8)
    cello = score.part("cello", instrument="cello", volume=0.22,
-                        reverb=0.4, reverb_type=REV)
+                        reverb=0.4, reverb_type=REV, ensemble=3)
    cello.rest(16.0)
    for note, dur, vel in [("E2",4.0,52),("G2",4.0,55),("B2",4.0,58),("E3",4.0,62)]:
        cello.add(note, dur, velocity=vel)
@@ -1943,7 +1943,7 @@ def ascent():
        theremin.add(note, dur, velocity=vel)

    strings = score.part("strings", instrument="string_ensemble", volume=0.15,
-                          reverb=0.45, reverb_type=REV)
+                          reverb=0.45, reverb_type=REV, ensemble=8)
    strings.rest(40.0)
    for sym, vel in [("Em",52),("C",55),("Am",58),("B",55),("Em",60),("C",62)]:
        strings.add(Chord.from_symbol(sym), 4.0, velocity=vel)
@@ -2218,7 +2218,7 @@ def pop_rock():
                       cabinet=1.0, cabinet_brightness=0.6,
                       reverb=0.2, reverb_type="plate", pan=0.2)
    strings = score.part("strings", instrument="string_ensemble", volume=0.12,
-                          reverb=0.35, reverb_type="hall")
+                          reverb=0.35, reverb_type="hall", ensemble=6)

    prog = ["G", "D", "Em", "C"]

@@ -2440,6 +2440,565 @@ def acid_tabla():
    play_song(score, "Acid Tabla — 303 filter automation + tabla (ramp, articulations, Part.hit)")


+def snare_cadence():
+    """Snare Cadence — full drumline with ensemble, flams, diddles, cheese."""
+    score = Score("4/4", bpm=120)
+
+    S = DrumSound.MARCH_SNARE
+    R = DrumSound.MARCH_RIMSHOT
+    C = DrumSound.MARCH_CLICK
+    Q1 = DrumSound.QUAD_1
+    Q2 = DrumSound.QUAD_2
+    Q3 = DrumSound.QUAD_3
+    Q4 = DrumSound.QUAD_4
+    QS = DrumSound.QUAD_SPOCK
+    B1 = DrumSound.BASS_1
+    B2 = DrumSound.BASS_2
+    B3 = DrumSound.BASS_3
+    B4 = DrumSound.BASS_4
+    B5 = DrumSound.BASS_5
+
+    # Snare line — 8 players
+    p = score.part("snares", synth="sine", volume=0.9, reverb=0.2, ensemble=8)
+    # Quad line — 4 players
+    q = score.part("quads", synth="sine", volume=0.5, reverb=0.2, ensemble=4)
+    # Bass line — 5 players
+    b = score.part("basses", synth="sine", volume=0.55, reverb=0.2, ensemble=5)
+
+    _trip = 1.0 / 3
+
+    # Helper: bass split run (down or up)
+    def bass_down(dur=Duration.SIXTEENTH):
+        b.hit(B1, dur, velocity=95)
+        b.hit(B2, dur, velocity=90)
+        b.hit(B3, dur, velocity=85)
+        b.hit(B4, dur, velocity=90)
+
+    def bass_up(dur=Duration.SIXTEENTH):
+        b.hit(B4, dur, velocity=90)
+        b.hit(B3, dur, velocity=85)
+        b.hit(B2, dur, velocity=90)
+        b.hit(B1, dur, velocity=95)
+
+    def bass_hit(dur=Duration.QUARTER):
+        b.hit(B3, dur, velocity=100)
+
+    def quad_sweep_down():
+        q.hit(Q1, Duration.SIXTEENTH, velocity=95)
+        q.hit(Q2, Duration.SIXTEENTH, velocity=88)
+        q.hit(Q3, Duration.SIXTEENTH, velocity=82)
+        q.hit(Q4, Duration.SIXTEENTH, velocity=78)
+
+    def quad_sweep_up():
+        q.hit(Q4, Duration.SIXTEENTH, velocity=78)
+        q.hit(Q3, Duration.SIXTEENTH, velocity=82)
+        q.hit(Q2, Duration.SIXTEENTH, velocity=88)
+        q.hit(Q1, Duration.SIXTEENTH, velocity=95)
+
+    # ── Click count-off ──
+    for _ in range(4):
+        p.hit(C, Duration.QUARTER, velocity=95)
+        q.rest(Duration.QUARTER)
+        b.rest(Duration.QUARTER)
+
+    # ── Section 1: 16th groove — snares only (4 bars) ──
+    for _ in range(16):
+        q.rest(Duration.QUARTER)
+        b.rest(Duration.QUARTER)
+
+    for _ in range(2):
+        p.hit(R, Duration.SIXTEENTH, velocity=118)
+        p.hit(S, Duration.SIXTEENTH, velocity=32)
+        p.hit(S, Duration.SIXTEENTH, velocity=35)
+        p.hit(S, Duration.SIXTEENTH, velocity=30)
+        p.hit(R, Duration.SIXTEENTH, velocity=115)
+        p.hit(S, Duration.SIXTEENTH, velocity=30)
+        p.hit(S, Duration.SIXTEENTH, velocity=28)
+        p.hit(S, Duration.SIXTEENTH, velocity=32)
+        p.hit(R, Duration.SIXTEENTH, velocity=118)
+        p.hit(S, Duration.SIXTEENTH, velocity=35)
+        p.hit(S, Duration.SIXTEENTH, velocity=30)
+        p.hit(S, Duration.SIXTEENTH, velocity=32)
+        p.hit(R, Duration.SIXTEENTH, velocity=120)
+        p.hit(S, Duration.SIXTEENTH, velocity=30)
+        p.hit(S, Duration.SIXTEENTH, velocity=28)
+        p.hit(S, Duration.SIXTEENTH, velocity=32)
+
+    # Triplets mixed in
+    for _ in range(2):
+        p.hit(R, _trip, velocity=118)
+        p.hit(S, _trip, velocity=32)
+        p.hit(S, _trip, velocity=30)
+        p.hit(R, _trip, velocity=115)
+        p.hit(S, _trip, velocity=28)
+        p.hit(S, _trip, velocity=32)
+        p.hit(R, Duration.SIXTEENTH, velocity=118)
+        p.hit(S, Duration.SIXTEENTH, velocity=30)
+        p.hit(S, Duration.SIXTEENTH, velocity=32)
+        p.hit(S, Duration.SIXTEENTH, velocity=28)
+        p.hit(R, _trip, velocity=118)
+        p.hit(S, _trip, velocity=30)
+        p.hit(S, _trip, velocity=35)
+
+    # ── Section 2: Quads + bass enter (4 bars) ──
+    for _ in range(2):
+        p.flam(S, Duration.QUARTER, velocity=118)
+        p.hit(S, Duration.SIXTEENTH, velocity=30)
+        p.hit(S, Duration.SIXTEENTH, velocity=32)
+        p.hit(R, _trip, velocity=118)
+        p.hit(S, _trip, velocity=28)
+        p.hit(S, _trip, velocity=30)
+        p.flam(S, Duration.QUARTER, velocity=118)
+
+        quad_sweep_down()
+        q.hit(QS, Duration.QUARTER, velocity=100)
+        quad_sweep_up()
+        q.hit(QS, Duration.QUARTER, velocity=100)
+
+        bass_hit()
+        b.hit(B5, Duration.QUARTER, velocity=95)
+        bass_hit()
+        b.hit(B1, Duration.QUARTER, velocity=95)
+
+    for _ in range(2):
+        p.hit(S, _trip, velocity=35)
+        p.flam(S, _trip * 2, velocity=118)
+        p.hit(S, Duration.SIXTEENTH, velocity=30)
+        p.hit(S, Duration.SIXTEENTH, velocity=32)
+        p.flam(S, Duration.QUARTER, velocity=118)
+        p.hit(S, _trip, velocity=28)
+        p.hit(R, _trip, velocity=122)
+        p.hit(S, _trip, velocity=35)
+
+        quad_sweep_down()
+        quad_sweep_up()
+        q.hit(Q1, Duration.EIGHTH, velocity=95)
+        q.hit(Q4, Duration.EIGHTH, velocity=85)
+        q.hit(QS, Duration.QUARTER, velocity=100)
+
+        bass_down()
+        bass_up()
+        b.hit(B3, Duration.HALF, velocity=100)
+
+    # ── Section 3: Flams + diddles + full line (4 bars) ──
+    for _ in range(2):
+        p.flam(S, Duration.QUARTER, velocity=120)
+        p.diddle(S, Duration.EIGHTH, velocity=45)
+        p.hit(S, _trip, velocity=30)
+        p.hit(S, _trip, velocity=32)
+        p.hit(S, _trip, velocity=28)
+        p.hit(R, Duration.EIGHTH, velocity=122)
+        p.diddle(S, Duration.EIGHTH, velocity=42)
+
+        q.hit(Q1, Duration.QUARTER, velocity=95)
+        q.hit(Q3, Duration.EIGHTH, velocity=55)
+        q.hit(Q2, _trip, velocity=55)
+        q.hit(Q3, _trip, velocity=55)
+        q.hit(Q4, _trip, velocity=55)
+        q.hit(QS, Duration.EIGHTH, velocity=100)
+        q.hit(Q1, Duration.EIGHTH, velocity=55)
+
+        bass_hit()
+        b.hit(B1, Duration.EIGHTH, velocity=90)
+        b.hit(B5, Duration.EIGHTH, velocity=95)
+        bass_hit()
+        b.hit(B5, Duration.EIGHTH, velocity=90)
+        b.hit(B1, Duration.EIGHTH, velocity=95)
+
+    for _ in range(2):
+        p.diddle(S, Duration.EIGHTH, velocity=45)
+        p.hit(R, _trip, velocity=120)
+        p.hit(S, _trip, velocity=30)
+        p.hit(S, _trip, velocity=32)
+        p.diddle(S, Duration.EIGHTH, velocity=48)
+        p.hit(R, _trip, velocity=118)
+        p.hit(S, _trip, velocity=28)
+        p.hit(S, _trip, velocity=30)
+        p.flam(S, Duration.EIGHTH, velocity=122)
+        p.hit(S, Duration.EIGHTH, velocity=35)
+
+        quad_sweep_down()
+        quad_sweep_up()
+        quad_sweep_down()
+        quad_sweep_up()
+
+        bass_down()
+        bass_up()
+        bass_down()
+        bass_up()
+
+    # ── Section 4: Cheese + 32nds (4 bars) ──
+    for _ in range(2):
+        p.cheese(S, Duration.QUARTER, velocity=120)
+        p.hit(S, 0.0625, velocity=30)
+        p.hit(S, 0.0625, velocity=32)
+        p.hit(S, 0.0625, velocity=35)
+        p.hit(S, 0.0625, velocity=30)
+        p.cheese(S, Duration.QUARTER, velocity=118)
+        p.diddle(S, Duration.EIGHTH, velocity=48)
+        p.hit(R, Duration.EIGHTH, velocity=125)
+
+        q.hit(QS, Duration.QUARTER, velocity=105)
+        q.hit(Q1, Duration.SIXTEENTH, velocity=55)
+        q.hit(Q2, Duration.SIXTEENTH, velocity=55)
+        q.hit(Q3, Duration.SIXTEENTH, velocity=55)
+        q.hit(Q4, Duration.SIXTEENTH, velocity=55)
+        q.hit(QS, Duration.QUARTER, velocity=105)
+        q.hit(Q4, Duration.EIGHTH, velocity=55)
+        q.hit(Q1, Duration.EIGHTH, velocity=90)
+
+        bass_hit()
+        b.hit(B1, Duration.EIGHTH, velocity=90)
+        b.hit(B3, Duration.EIGHTH, velocity=85)
+        b.hit(B5, Duration.EIGHTH, velocity=95)
+        b.hit(B3, Duration.EIGHTH, velocity=85)
+        bass_hit()
+        b.rest(Duration.QUARTER)
+
+    # All cheese
+    p.cheese(S, Duration.QUARTER, velocity=122)
+    p.cheese(S, Duration.QUARTER, velocity=120)
+    p.cheese(S, Duration.QUARTER, velocity=125)
+    p.cheese(S, Duration.QUARTER, velocity=122)
+
+    q.hit(QS, Duration.QUARTER, velocity=105)
+    q.hit(QS, Duration.QUARTER, velocity=105)
+    q.hit(QS, Duration.QUARTER, velocity=108)
+    q.hit(QS, Duration.QUARTER, velocity=105)
+
+    b.hit(B5, Duration.QUARTER, velocity=100)
+    b.hit(B3, Duration.QUARTER, velocity=100)
+    b.hit(B1, Duration.QUARTER, velocity=100)
+    b.hit(B3, Duration.QUARTER, velocity=100)
+
+    p.flam(S, Duration.EIGHTH, velocity=120)
+    p.diddle(S, Duration.EIGHTH, velocity=50)
+    p.flam(S, Duration.EIGHTH, velocity=122)
+    p.diddle(S, Duration.EIGHTH, velocity=52)
+    p.flam(S, Duration.EIGHTH, velocity=125)
+    p.diddle(S, Duration.EIGHTH, velocity=55)
+    p.hit(R, Duration.EIGHTH, velocity=127)
+    p.hit(S, Duration.EIGHTH, velocity=38)
+
+    quad_sweep_down()
+    quad_sweep_up()
+    quad_sweep_down()
+    quad_sweep_up()
+
+    bass_down()
+    bass_up()
+    bass_down()
+    bass_up()
+
+    # ── Section 5: 16ths + triplet 16ths + 32nds (4 bars) ──
+    _trip16 = 1.0 / 6
+
+    for _ in range(2):
+        for beat in range(4):
+            p.hit(R, _trip, velocity=118)
+            p.hit(S, _trip, velocity=35)
+            p.hit(S, _trip, velocity=32)
+
+        quad_sweep_down()
+        quad_sweep_up()
+        quad_sweep_down()
+        quad_sweep_up()
+
+        bass_hit()
+        b.hit(B5, Duration.QUARTER, velocity=95)
+        bass_hit()
+        b.hit(B1, Duration.QUARTER, velocity=95)
+
+    # 32nd run crescendo
+    for i in range(32):
+        p.hit(S, 0.0625, velocity=min(22 + i * 3, 92))
+    p.hit(R, Duration.EIGHTH, velocity=125)
+    p.hit(R, Duration.EIGHTH, velocity=127)
+
+    for _ in range(4):
+        q.hit(Q1, 0.0625, velocity=55)
+        q.hit(Q2, 0.0625, velocity=55)
+        q.hit(Q3, 0.0625, velocity=55)
+        q.hit(Q4, 0.0625, velocity=55)
+    q.hit(QS, Duration.QUARTER, velocity=108)
+
+    bass_down()
+    bass_up()
+    bass_down()
+    b.hit(B5, Duration.QUARTER, velocity=100)
+    b.hit(B1, Duration.QUARTER, velocity=100)
+
+    # Triplet 16ths — all sections
+    for _ in range(2):
+        for beat in range(4):
+            p.hit(R, _trip16, velocity=115)
+            p.hit(S, _trip16, velocity=30)
+            p.hit(S, _trip16, velocity=32)
+            p.hit(R, _trip16, velocity=112)
+            p.hit(S, _trip16, velocity=28)
+            p.hit(S, _trip16, velocity=30)
+
+        for beat in range(4):
+            q.hit(Q1, _trip16, velocity=90)
+            q.hit(Q2, _trip16, velocity=55)
+            q.hit(Q3, _trip16, velocity=55)
+            q.hit(Q4, _trip16, velocity=55)
+            q.hit(Q3, _trip16, velocity=55)
+            q.hit(Q2, _trip16, velocity=55)
+
+        bass_down()
+        bass_up()
+        bass_down()
+        bass_up()
+
+    # ── Section 6: Buzz roll climax (2 bars) ──
+    for i in range(64):
+        p.hit(S, 0.0625, velocity=min(20 + i * 1.5, 100))
+    p.hit(R, Duration.EIGHTH, velocity=127)
+    p.hit(R, Duration.EIGHTH, velocity=127)
+
+    for i in range(32):
+        q.hit([Q1, Q2, Q3, Q4][i % 4], 0.0625, velocity=min(40 + i * 2, 95))
+    q.hit(QS, Duration.QUARTER, velocity=110)
+
+    for i in range(16):
+        b.hit([B1, B2, B3, B4, B5, B4, B3, B2,
+               B1, B2, B3, B4, B5, B4, B3, B2][i], Duration.SIXTEENTH, velocity=90)
+    b.hit(B3, Duration.HALF, velocity=100)
+    b.hit(B3, Duration.HALF, velocity=100)
+
+    # ── Ending: big unison hits ──
+    p.hit(R, Duration.EIGHTH, velocity=127)
+    q.hit(QS, Duration.EIGHTH, velocity=110)
+    b.hit(B3, Duration.EIGHTH, velocity=100)
+
+    p.rest(Duration.QUARTER + Duration.EIGHTH)
+    q.rest(Duration.QUARTER + Duration.EIGHTH)
+    b.rest(Duration.QUARTER + Duration.EIGHTH)
+
+    p.hit(R, Duration.EIGHTH, velocity=127)
+    q.hit(QS, Duration.EIGHTH, velocity=110)
+    b.hit(B3, Duration.EIGHTH, velocity=100)
+
+    p.rest(Duration.QUARTER + Duration.EIGHTH)
+    q.rest(Duration.QUARTER + Duration.EIGHTH)
+    b.rest(Duration.QUARTER + Duration.EIGHTH)
+
+    # Flam into final CRACK — all sections
+    p.flam(S, Duration.EIGHTH, velocity=127)
+    q.hit(QS, Duration.EIGHTH, velocity=110)
+    b.hit(B3, Duration.EIGHTH, velocity=100)
+
+    p.rest(Duration.QUARTER + Duration.EIGHTH)
+    q.rest(Duration.QUARTER + Duration.EIGHTH)
+    b.rest(Duration.QUARTER + Duration.EIGHTH)
+
+    p.hit(R, Duration.QUARTER, velocity=127)
+    q.hit(QS, Duration.QUARTER, velocity=110)
+    b.hit(B3, Duration.QUARTER, velocity=100)
+
+    p.rest(Duration.HALF)
+    q.rest(Duration.HALF)
+    b.rest(Duration.HALF)
+
+    play_song(score, "Snare Cadence — full drumline (8 snares, 4 quads, 5 basses)")
+
+
+def ensemble_showcase():
+    """Ensemble Showcase — acid bass, tabla solo, strings, snare line."""
+    score = Score("4/4", bpm=128)
+
+    # ── Drums: house kit ──
+    score.drums("house", repeats=24, fill="house", fill_every=8)
+    score.set_drum_effects(volume=0.4, reverb=0.1)
+
+    # ── 303 Acid Bass: detuned, spread, LFO filter, ensemble=3 ──
+    acid = score.part("acid", synth="saw", volume=0.55, ensemble=3,
+                      lowpass=400, lowpass_q=10.0, distortion=0.35,
+                      distortion_drive=4.0, legato=True, glide=0.03,
+                      detune=12, spread=0.4, sub_osc=0.15,
+                      sidechain=0.5, sidechain_release=0.08)
+
+    acid.lfo("lowpass", rate=0.5, min=400, max=5000, bars=16, shape="sine")
+    for _ in range(8):
+        for n in ["C2", "C3", "C2", "Eb2", "C2", "G2", "Bb2", "C2"]:
+            acid.add(n, Duration.EIGHTH, velocity=90)
+
+    acid.ramp(over=Duration.WHOLE * 8, curve="ease_in", lowpass=6000)
+    for _ in range(8):
+        for n in ["C2", "Eb3", "C3", "G2", "Bb2", "C3", "G2", "C2"]:
+            acid.add(n, Duration.EIGHTH, velocity=95)
+
+    acid.ramp(over=Duration.WHOLE * 8, curve="ease_out", lowpass=500)
+    for _ in range(8):
+        for n in ["C2", "C3", "C2", "Eb2", "C2", "G2", "Bb2", "C2"]:
+            acid.add(n, Duration.EIGHTH, velocity=88)
+
+    # ── Strings: 16-player ensemble pad ──
+    strings = score.part("strings", instrument="string_ensemble", volume=0.0,
+                         reverb=0.4, ensemble=16, detune=8, spread=0.5)
+
+    for _ in range(32):
+        strings.rest(Duration.QUARTER)
+    strings.ramp(over=Duration.WHOLE * 4, curve="ease_in", volume=0.18)
+    for ch in ["Cm", "Ab", "Eb", "Bb"] * 4:
+        strings.add(Chord.from_symbol(ch), Duration.WHOLE, velocity=55)
+    strings.ramp(over=Duration.WHOLE * 4, curve="ease_out", volume=0.0)
+    for ch in ["Cm", "Ab", "Eb", "Bb"]:
+        strings.add(Chord.from_symbol(ch), Duration.WHOLE, velocity=45)
+    for _ in range(16):
+        strings.rest(Duration.QUARTER)
+
+    # ── Tabla: ensemble=3, enters bar 9 ──
+    tabla = score.part("tabla", synth="sine", volume=0.0, reverb=0.15, ensemble=3)
+
+    for _ in range(32):
+        tabla.rest(Duration.QUARTER)
+    tabla.ramp(over=Duration.WHOLE * 2, volume=0.45)
+
+    # Keherwa groove — 8 bars
+    for _ in range(8):
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=95, articulation="accent")
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=50)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=48)
+        tabla.hit(DrumSound.TABLA_NA, Duration.EIGHTH, velocity=82)
+        tabla.hit(DrumSound.TABLA_TIN, Duration.EIGHTH, velocity=78)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=48)
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=88, articulation="accent")
+        tabla.hit(DrumSound.TABLA_GE, Duration.EIGHTH, velocity=72)
+
+    # Tabla solo — getting busier
+    tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=100, articulation="marcato")
+    tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=45)
+    tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=48)
+    tabla.hit(DrumSound.TABLA_NA, Duration.EIGHTH, velocity=85)
+    tabla.hit(DrumSound.TABLA_TIN, Duration.EIGHTH, velocity=80)
+    tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=45)
+    tabla.hit(DrumSound.TABLA_NA, Duration.SIXTEENTH, velocity=55)
+    tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=95, articulation="accent")
+    tabla.hit(DrumSound.TABLA_GE_BEND, Duration.EIGHTH, velocity=82)
+
+    tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=105, articulation="marcato")
+    tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=48)
+    tabla.hit(DrumSound.TABLA_NA, Duration.SIXTEENTH, velocity=55)
+    tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=45)
+    tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=48)
+    tabla.hit(DrumSound.TABLA_NA, Duration.EIGHTH, velocity=88)
+    tabla.hit(DrumSound.TABLA_DHA, Duration.SIXTEENTH, velocity=100)
+    tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=50)
+    tabla.hit(DrumSound.TABLA_GE_BEND, Duration.EIGHTH, velocity=85)
+    tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=108, articulation="accent")
+
+    # Tihai crescendo
+    for vel in [85, 90, 95, 100, 105, 110]:
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=vel, articulation="accent")
+        tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=int(vel * 0.55))
+        tabla.hit(DrumSound.TABLA_NA, Duration.SIXTEENTH, velocity=int(vel * 0.7))
+    tabla.hit(DrumSound.TABLA_DHA, Duration.QUARTER, velocity=125, articulation="fermata")
+    tabla.hit(DrumSound.TABLA_GE_BEND, Duration.QUARTER, velocity=110)
+
+    # Groove out
+    for _ in range(4):
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=88, articulation="accent")
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=45)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=42)
+        tabla.hit(DrumSound.TABLA_NA, Duration.EIGHTH, velocity=75)
+        tabla.hit(DrumSound.TABLA_TIN, Duration.EIGHTH, velocity=70)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=42)
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=80)
+        tabla.hit(DrumSound.TABLA_GE, Duration.EIGHTH, velocity=65)
+
+    # ── Snare line: 8-player ensemble, enters bar 17 ──
+    S = DrumSound.MARCH_SNARE
+    R = DrumSound.MARCH_RIMSHOT
+
+    snares = score.part("snares", synth="sine", volume=0.0, reverb=0.15, ensemble=8)
+
+    for _ in range(64):
+        snares.rest(Duration.QUARTER)
+    snares.ramp(over=Duration.WHOLE * 2, volume=0.7)
+
+    for _ in range(4):
+        snares.hit(R, Duration.SIXTEENTH, velocity=118)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(S, Duration.SIXTEENTH, velocity=32)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(R, Duration.SIXTEENTH, velocity=115)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(S, Duration.SIXTEENTH, velocity=32)
+        snares.hit(R, Duration.SIXTEENTH, velocity=118)
+        snares.hit(S, Duration.SIXTEENTH, velocity=35)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(R, Duration.SIXTEENTH, velocity=120)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(S, Duration.SIXTEENTH, velocity=32)
+
+    # Buzz roll finale
+    for i in range(64):
+        snares.hit(S, 0.0625, velocity=min(20 + i * 1.5, 100))
+    snares.hit(R, Duration.EIGHTH, velocity=127)
+    snares.hit(R, Duration.EIGHTH, velocity=127)
+
+    snares.ramp(over=Duration.WHOLE * 2, curve="ease_out", volume=0.0)
+    for _ in range(2):
+        snares.hit(R, Duration.SIXTEENTH, velocity=110)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(S, Duration.SIXTEENTH, velocity=32)
+        snares.hit(R, Duration.SIXTEENTH, velocity=108)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(S, Duration.SIXTEENTH, velocity=32)
+        snares.hit(R, Duration.SIXTEENTH, velocity=105)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(S, Duration.SIXTEENTH, velocity=32)
+        snares.hit(R, Duration.SIXTEENTH, velocity=100)
+        snares.hit(S, Duration.SIXTEENTH, velocity=30)
+        snares.hit(S, Duration.SIXTEENTH, velocity=28)
+        snares.hit(S, Duration.SIXTEENTH, velocity=32)
+
+    # ── Lead synth: 6-player ensemble, enters bar 5 ──
+    lead = score.part("lead", synth="saw", envelope="pluck", volume=0.0,
+                      lowpass=3500, detune=6, chorus=0.1, reverb=0.2,
+                      delay=0.15, delay_time=0.33, delay_feedback=0.25,
+                      ensemble=6)
+
+    for _ in range(16):
+        lead.rest(Duration.QUARTER)
+    lead.ramp(over=Duration.WHOLE * 2, volume=0.3)
+
+    for _ in range(2):
+        lead.add("Eb5", Duration.QUARTER, velocity=88)
+        lead.add("G5", Duration.QUARTER, velocity=92)
+        lead.add("Bb5", Duration.HALF, velocity=95, articulation="accent")
+        lead.add("Ab5", Duration.QUARTER, velocity=88)
+        lead.add("G5", Duration.QUARTER, velocity=85)
+        lead.add("Eb5", Duration.QUARTER, velocity=82)
+        lead.add("D5", Duration.QUARTER, velocity=80)
+
+    lead.swell(["Eb5", "G5", "Bb5", "C6", "Bb5", "G5", "Eb5", "D5"],
+               Duration.QUARTER, low_vel=75, peak_vel=105)
+    lead.decrescendo(["Eb5", "D5", "C5", "Bb4"], Duration.HALF,
+                     start_vel=90, end_vel=60)
+
+    for _ in range(16):
+        lead.rest(Duration.QUARTER)
+
+    lead.ramp(over=Duration.WHOLE * 2, volume=0.35)
+    lead.crescendo(["C5", "Eb5", "G5", "Bb5", "C6", "Eb6", "C6", "Bb5"],
+                   Duration.QUARTER, start_vel=80, end_vel=110)
+    lead.add("G5", Duration.HALF, velocity=105, bend=1, bend_type="smooth")
+    lead.add("Eb5", Duration.HALF, velocity=95)
+    lead.decrescendo(["C5", "Bb4", "G4", "Eb4"], Duration.WHOLE,
+                     start_vel=85, end_vel=40)
+
+    play_song(score, "Ensemble Showcase — acid bass, tabla solo, 16-player strings, 8-player snare line")
+
+
 SONGS = {
    "1": ("Bossa Nova in A minor", bossa_nova_girl),
    "2": ("Bebop in Bb major", bebop_in_bb),
@@ -2472,6 +3031,8 @@ SONGS = {
    "29": ("Pop Rock (I-V-vi-IV)", pop_rock),
    "30": ("Sitar Drone (Bhairav, hold() polyphony)", sitar_drone),
    "31": ("Acid Tabla (303 + tabla, ramp, articulations)", acid_tabla),
+    "32": ("Snare Cadence (marching snare, flams, diddles)", snare_cadence),
+    "33": ("Ensemble Showcase (acid+tabla+strings+snare line)", ensemble_showcase),
 }

 if __name__ == "__main__":
@@ -2485,7 +3046,7 @@ if __name__ == "__main__":
            print(f"    {key:>2}. {name}")

        print()
-        choice = input("  Pick a song (1-31, or 'all'): ").strip()
+        choice = input("  Pick a song (1-33, or 'all'): ").strip()
        print()

        if choice == "all":
@@ -0,0 +1,69 @@
+"""Sprunki Simon Phase 1 — melody reference.
+
+Notes transcribed from MIDI. Use as a base for arrangements.
+
+Usage:
+    python examples/sprunki.py
+"""
+
+import sounddevice as sd
+
+from pytheory import Score, Duration
+from pytheory.play import render_score, SAMPLE_RATE
+
+
+def sprunki_simon():
+    score = Score("4/4", bpm=200)
+
+    lead = score.part("lead", synth="square", envelope="pluck", volume=0.5,
+                      lowpass=4500, detune=3, reverb=0.1)
+
+    # Phrase A
+    lead.add("E4", 1.0)
+    lead.add("G4", 1.0)
+    lead.rest(1.5)
+    lead.add("A4", 0.5)
+    lead.add("B4", 1.0)
+    lead.add("A4", 1.0)
+    lead.add("G4", 1.0)
+    lead.add("D4", 1.0)
+
+    # Phrase B
+    lead.add("E4", 1.0)
+    lead.add("G4", 1.0)
+    lead.rest(1.5)
+    lead.add("A4", 0.5)
+    lead.add("D4", 2.0)
+    lead.add("B3", 1.0)
+    lead.add("A3", 0.5)
+    lead.add("D4", 0.5)
+
+    # Phrase C
+    lead.add("E4", 1.0)
+    lead.add("G4", 1.0)
+    lead.rest(1.5)
+    lead.add("A4", 0.5)
+    lead.add("B4", 1.0)
+    lead.add("A4", 1.0)
+    lead.add("G4", 1.0)
+    lead.add("B4", 1.0)
+
+    # Phrase D
+    lead.add("A4", 2.0)
+    lead.add("G4", 1.0)
+    lead.add("E4", 1.0)
+    lead.add("B3", 2.0)
+    lead.add("D4", 2.0)
+
+    return score
+
+
+if __name__ == "__main__":
+    score = sprunki_simon()
+    print("  Sprunki Simon Phase 1")
+    try:
+        buf = render_score(score)
+        sd.play(buf, SAMPLE_RATE)
+        sd.wait()
+    except KeyboardInterrupt:
+        sd.stop()
@@ -1,6 +1,6 @@
 [project]
 name = "pytheory"
-version = "0.39.0"
+version = "0.40.0"
 description = "Music Theory for Humans"
 readme = "README.md"
 license = "MIT"
@@ -1,6 +1,6 @@
 """PyTheory: Music Theory for Humans."""

-__version__ = "0.39.0"
+__version__ = "0.40.0"

 from .tones import Tone, Interval
 from .systems import System, SYSTEMS, TET
@@ -23,7 +23,7 @@ __all__ = [
    "PROGRESSIONS", "Chord", "Fretboard", "Fingering", "analyze_progression",
    "System", "SYSTEMS", "TET", "CHARTS", "charts_for_fretboard",
    "play", "save", "save_midi", "play_progression", "play_pattern",
-    "play_score", "Synth", "Envelope",
+    "play_score", "render_score", "Synth", "Envelope",
    "Duration", "TimeSignature", "RhythmNote", "Rest", "Score", "Part",
    "DrumSound", "Pattern", "Section", "INSTRUMENTS",
 ]
@@ -358,27 +358,42 @@ def piano_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
    # Harmonics with the metallic spectral shape of steel strings
    n_harmonics = min(15, int((SAMPLE_RATE / 2) / hz))

+    # Vectorized harmonic synthesis — all harmonics at once
+    harmonics = numpy.arange(1, n_harmonics + 1, dtype=numpy.float64)
+
+    # Piano spectral shape as array
+    amps = numpy.zeros(n_harmonics, dtype=numpy.float64)
+    amps[0] = 1.0
+    if n_harmonics > 1:
+        amps[1] = 0.7 + 0.15 * brightness
+    if n_harmonics > 2:
+        amps[2] = 0.45 + 0.2 * brightness
+    for i in range(3, min(6, n_harmonics)):
+        amps[i] = (0.25 + 0.15 * brightness) / (i + 1)
+    for i in range(6, n_harmonics):
+        amps[i] = (0.1 + 0.1 * brightness) / ((i + 1) ** 2)
+
+    # Per-harmonic decay rates
+    h_decay_rates = (1.5 - 0.5 * brightness) * (harmonics - 1)
+
+    # Random phases
+    phases = rng.uniform(0, 2 * numpy.pi, n_harmonics)
+
    for string_hz in [hz, hz2]:
-        for n in range(1, n_harmonics + 1):
-            f_n = string_hz * n
-            if f_n >= SAMPLE_RATE / 2:
-                break
-            # Piano spectral shape: strong 1-3, then falling
-            # Upper register has more prominent harmonics (brighter)
-            if n == 1:
-                amp = 1.0
-            elif n == 2:
-                amp = 0.7 + 0.15 * brightness
-            elif n == 3:
-                amp = 0.45 + 0.2 * brightness
-            elif n <= 6:
-                amp = (0.25 + 0.15 * brightness) / n
-            else:
-                amp = (0.1 + 0.1 * brightness) / (n * n)
-            # Higher harmonics decay faster, but less so in upper register
-            h_decay = decay * numpy.exp(-(1.5 - 0.5 * brightness) * (n - 1) * t)
-            phase = rng.uniform(0, 2 * numpy.pi)
-            wave += amp * numpy.sin(2 * numpy.pi * f_n * t + phase) * h_decay
+        freqs = string_hz * harmonics  # (n_harmonics,)
+        # Mask out harmonics above Nyquist
+        valid = freqs < SAMPLE_RATE / 2
+        if not valid.any():
+            continue
+        v_freqs = freqs[valid]
+        v_amps = amps[valid]
+        v_rates = h_decay_rates[valid]
+        v_phases = phases[valid]
+
+        # 2D: (n_valid, n_samples) — one sin() call for all harmonics
+        phase_matrix = 2 * numpy.pi * v_freqs[:, numpy.newaxis] * t[numpy.newaxis, :] + v_phases[:, numpy.newaxis]
+        decay_matrix = decay[numpy.newaxis, :] * numpy.exp(-v_rates[:, numpy.newaxis] * t[numpy.newaxis, :])
+        wave += (v_amps[:, numpy.newaxis] * numpy.sin(phase_matrix) * decay_matrix).sum(axis=0)

    wave *= 0.5

@@ -401,6 +416,68 @@ def piano_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
    return (peak * wave).astype(numpy.int16)


+def rhodes_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
+    """Rhodes electric piano — tine struck by hammer, electromagnetic pickup.
+
+    The Rhodes sound comes from a rubber-tipped hammer hitting a thin
+    steel tine next to a tonebar. The tine vibrates near an electromagnetic
+    pickup (like a guitar pickup), producing a warm, bell-like tone with:
+    1. Strong fundamental + 2nd harmonic (tine character)
+    2. Bright metallic attack that mellows quickly (hammer on tine)
+    3. Bell-like inharmonic partials on soft hits, bark on hard hits
+    4. Asymmetric waveform from the pickup's nonlinear response
+    """
+    t = numpy.arange(n_samples, dtype=numpy.float64) / SAMPLE_RATE
+    rng = numpy.random.default_rng(int(hz * 100) % 2**31)
+
+    # Two-stage decay: quick initial drop, then long sustain
+    decay = numpy.where(t < 0.15,
+                        numpy.exp(-4.0 * t),
+                        numpy.exp(-4.0 * 0.15) * numpy.exp(-1.2 * (t - 0.15)))
+
+    wave = numpy.zeros(n_samples, dtype=numpy.float64)
+
+    # Brightness scales with pitch
+    brightness = numpy.clip((hz - 65) / 800, 0.0, 1.0)
+
+    # Tine harmonics — strong fundamental, prominent 2nd, bell-like upper
+    tine_harmonics = [
+        (1, 1.0),           # fundamental
+        (2, 0.6 + 0.15 * brightness),   # 2nd — the Rhodes character
+        (3, 0.15 + 0.1 * brightness),   # 3rd — adds warmth
+        (4, 0.08 + 0.08 * brightness),  # 4th — bell quality
+        (5, 0.04),          # 5th — subtle shimmer
+        (6, 0.02),          # 6th
+    ]
+
+    for n, amp in tine_harmonics:
+        f_n = hz * n
+        if f_n >= SAMPLE_RATE / 2:
+            break
+        # Higher harmonics decay faster
+        h_decay = decay * numpy.exp(-(0.8 + 0.3 * brightness) * (n - 1) * t)
+        phase = rng.uniform(0, 2 * numpy.pi)
+        wave += amp * numpy.sin(2 * numpy.pi * f_n * t + phase) * h_decay
+
+    # Hammer-on-tine transient — bright metallic click
+    click_len = min(int(SAMPLE_RATE * 0.008), n_samples)
+    click_t = numpy.arange(click_len, dtype=numpy.float64) / SAMPLE_RATE
+    # Inharmonic tine ring at attack (bell partials)
+    click = (numpy.sin(2 * numpy.pi * hz * 5.3 * click_t) * 0.15 +
+             numpy.sin(2 * numpy.pi * hz * 7.1 * click_t) * 0.08)
+    click *= numpy.exp(-numpy.linspace(0, 20, click_len))
+    wave[:click_len] += click
+
+    # Subtle asymmetry from pickup nonlinearity (soft saturation)
+    wave = numpy.tanh(wave * 1.2) / 1.2
+
+    mx = numpy.abs(wave).max()
+    if mx > 0:
+        wave /= mx
+
+    return (peak * wave).astype(numpy.int16)
+
+
 def bass_guitar_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
    """Bass guitar — plucked thick string with magnetic pickup.

@@ -718,45 +795,62 @@ def cello_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):


 def harp_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
-    """Harp — plucked string with large resonant soundboard.
+    """Harp — pure, singing tone with gentle pluck and long sustain.

-    Warmer than guitar, longer sustain, with the distinctive
-    "bloom" as the soundboard absorbs and re-radiates energy.
+    Nylon/gut strings on a large resonant frame. The tone is warm
+    and clean — mostly fundamental with gentle upper harmonics that
+    decay faster, leaving a pure singing sustain.
    """
-    period = int(SAMPLE_RATE / hz)
-    if period < 2:
-        period = 2
+    t = numpy.arange(n_samples, dtype=numpy.float64) / SAMPLE_RATE
    rng = numpy.random.default_rng(int(hz * 100) % 2**31)

-    # Soft pluck — fingers, not pick
-    buf = rng.uniform(-0.5, 0.5, period).astype(numpy.float64)
-    for _ in range(3):
+    # Long, gentle decay
+    decay = numpy.exp(-1.5 * t)
+
+    wave = numpy.zeros(n_samples, dtype=numpy.float64)
+
+    # Clean harmonics — strong fundamental, gentle upper partials
+    n_harmonics = min(10, int((SAMPLE_RATE / 2) / hz))
+    for n in range(1, n_harmonics + 1):
+        f_n = hz * n
+        if f_n >= SAMPLE_RATE / 2:
+            break
+        # Fundamental dominates, upper partials gentle and fast-decaying
+        if n == 1:
+            amp = 1.0
+        elif n == 2:
+            amp = 0.3
+        elif n == 3:
+            amp = 0.15
+        else:
+            amp = 0.06 / n
+        h_decay = decay * numpy.exp(-1.5 * (n - 1) * t)
+        phase = rng.uniform(0, 2 * numpy.pi)
+        wave += amp * numpy.sin(2 * numpy.pi * f_n * t + phase) * h_decay
+
+    # Karplus-Strong pluck transient — just the first ~50ms
+    # Gives the finger-on-string attack, then the pure tone takes over
+    period = max(2, int(SAMPLE_RATE / hz))
+    ks_rng = numpy.random.default_rng(int(hz * 77) % 2**31)
+    ks_buf = ks_rng.uniform(-0.3, 0.3, period).astype(numpy.float64)
+    # Pre-filter for soft finger pluck
+    for _ in range(4):
        for k in range(period - 1):
-            buf[k] = 0.6 * buf[k] + 0.4 * buf[k + 1]
+            ks_buf[k] = 0.6 * ks_buf[k] + 0.4 * ks_buf[k + 1]
+    pluck_len = min(int(SAMPLE_RATE * 0.05), n_samples)
+    pluck = numpy.zeros(pluck_len, dtype=numpy.float64)
+    for i in range(pluck_len):
+        pluck[i] = ks_buf[i % period]
+        nxt = (i + 1) % period
+        ks_buf[i % period] = 0.5 * (ks_buf[i % period] + ks_buf[nxt])
+    # Fade the KS pluck out quickly so the pure tone takes over
+    pluck *= numpy.exp(-numpy.linspace(0, 8, pluck_len)) * 0.4
+    wave[:pluck_len] += pluck

-    out = numpy.zeros(n_samples, dtype=numpy.float64)
-    for i in range(n_samples):
-        out[i] = buf[i % period]
-        next_idx = (i + 1) % period
-        # Long sustain — harp strings ring
-        buf[i % period] = 0.5 * (buf[i % period] + buf[next_idx]) * 0.9995
-
-    # Large soundboard resonance — bloom effect
-    for center, bw, gain in [(150, 60, 0.3), (350, 100, 0.25), (700, 150, 0.15)]:
-        lo = max(20, center - bw)
-        hi = min(SAMPLE_RATE // 2 - 1, center + bw)
-        if lo < hi:
-            bp, ap = scipy.signal.butter(2, [lo, hi], btype='band', fs=SAMPLE_RATE)
-            out += scipy.signal.lfilter(bp, ap, out) * gain
-
-    # Warm rolloff
-    bl, al = scipy.signal.butter(2, min(5000, hz * 10), btype='low', fs=SAMPLE_RATE)
-    out = scipy.signal.lfilter(bl, al, out)
-
-    mx = numpy.abs(out).max()
+    mx = numpy.abs(wave).max()
    if mx > 0:
-        out /= mx
-    return (peak * out).astype(numpy.int16)
+        wave /= mx
+    return (peak * wave).astype(numpy.int16)


 def upright_bass_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
@@ -817,11 +911,19 @@ def timpani_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
    wave += numpy.sin(2 * numpy.pi * hz * 1.99 * t) * 0.2 * numpy.exp(-10 * t)
    wave += numpy.sin(2 * numpy.pi * hz * 2.44 * t) * 0.1 * numpy.exp(-15 * t)

-    # Two-stage decay: initial thump fades fast, fundamental rings
-    decay = numpy.where(t < 0.15,
-                        numpy.exp(-4 * t),
-                        numpy.exp(-4 * 0.15) * numpy.exp(-1.5 * (t - 0.15)))
-    wave *= decay
+    # Two-stage decay: thump fades, but fundamental SUSTAINS long
+    # This is what makes the "oooh" — the fundamental rings and rings,
+    # so rapid hits in a roll stack into a singing resonance
+    thump_decay = numpy.exp(-6 * t)  # upper modes die fast
+    fund_decay = numpy.exp(-0.35 * t)  # fundamental sustains very long
+
+    # Apply different decays: fundamental gets long sustain
+    fund = numpy.sin(2 * numpy.pi * hz * t) * 0.8 * fund_decay
+    upper = (numpy.sin(2 * numpy.pi * hz * 1.5 * t) * 0.35 * numpy.exp(-6 * t) +
+             numpy.sin(2 * numpy.pi * hz * 1.99 * t) * 0.2 * numpy.exp(-10 * t) +
+             numpy.sin(2 * numpy.pi * hz * 2.44 * t) * 0.1 * numpy.exp(-15 * t))
+    upper *= thump_decay
+    wave = fund + upper

    # Felt mallet impact — warm, not sharp
    mallet_len = min(int(SAMPLE_RATE * 0.02), n_samples)
@@ -830,12 +932,11 @@ def timpani_wave(hz, peak=SAMPLE_PEAK, n_samples=SAMPLE_RATE):
    mallet *= numpy.exp(-numpy.linspace(0, 8, mallet_len))
    wave[:mallet_len] += mallet

-    # Copper kettle resonance — boosts low-mids
-    import scipy.signal as _sig
-    lo, hi = max(20, int(hz * 0.7)), min(SAMPLE_RATE // 2 - 1, int(hz * 2))
+    # Copper kettle resonance — boosts the fundamental ring
+    lo, hi = max(20, int(hz * 0.7)), min(SAMPLE_RATE // 2 - 1, int(hz * 1.3))
    if lo < hi:
-        bp, ap = _sig.butter(2, [lo, hi], btype='band', fs=SAMPLE_RATE)
-        kettle = _sig.lfilter(bp, ap, wave) * 0.3
+        bp, ap = scipy.signal.butter(2, [lo, hi], btype='band', fs=SAMPLE_RATE)
+        kettle = scipy.signal.lfilter(bp, ap, wave) * 0.4
        wave += kettle

    mx = numpy.abs(wave).max()
@@ -1857,7 +1958,7 @@ _SYNTH_FUNCTIONS = {
    "noise": noise_wave, "supersaw": supersaw_wave,
    "pwm_slow": pwm_slow_wave, "pwm_fast": pwm_fast_wave,
    "pluck_synth": pluck_wave, "organ_synth": organ_wave,
-    "strings_synth": strings_wave, "piano_synth": piano_wave,
+    "strings_synth": strings_wave, "piano_synth": piano_wave, "rhodes_synth": rhodes_wave,
    "bass_guitar_synth": bass_guitar_wave, "flute_synth": flute_wave,
    "trumpet_synth": trumpet_wave, "clarinet_synth": clarinet_wave,
    "marimba_synth": marimba_wave, "oboe_synth": oboe_wave,
@@ -1995,16 +2096,32 @@ def _noise(n_samples):
    return numpy.random.uniform(-1.0, 1.0, n_samples).astype(numpy.float32)


+# ── Cached helpers for hot paths ──────────────────────────────────────────
+
+_time_cache = {}
+
+
+def _get_time_array(n_samples):
+    """Cached time array — avoids reallocation on every synth call."""
+    if n_samples not in _time_cache:
+        _time_cache[n_samples] = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    return _time_cache[n_samples]
+
+
 def _sine_f32(hz, n_samples):
    """Float32 sine wave, normalized to ±1."""
-    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
-    return numpy.sin(2 * numpy.pi * hz * t)
+    return numpy.sin(2 * numpy.pi * hz * _get_time_array(n_samples))
+
+
+_decay_cache = {}


 def _exp_decay(n_samples, decay_rate):
-    """Exponential decay envelope from 1→0."""
-    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
-    return numpy.exp(-decay_rate * t)
+    """Exponential decay envelope from 1→0. Cached."""
+    key = (n_samples, decay_rate)
+    if key not in _decay_cache:
+        _decay_cache[key] = numpy.exp(-decay_rate * _get_time_array(n_samples))
+    return _decay_cache[key]


 def _synth_kick(n_samples):
@@ -2426,34 +2543,36 @@ def _synth_tabla_ke(n_samples):


 def _synth_dhol_dagga(n_samples):
-    """Dhol dagga — heavy bass side hit with thick stick.
+    """Dhol dagga — thunderous bass side hit with thick stick.

    The dhol's bass head is thick goatskin, hit with a heavy curved
-    stick (dagga). Massive low-end punch, the sound of bhangra.
+    stick (dagga). Massive, thunderous low-end — the kind of hit
+    you feel in your chest before you hear it.
    """
    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
-    # Heavy membrane thud
-    thump_len = min(int(SAMPLE_RATE * 0.08), n_samples)
+    # Heavy membrane thud — longer, wider band
+    thump_len = min(int(SAMPLE_RATE * 0.12), n_samples)
    thump_raw = _noise(thump_len)
    if thump_len > 20:
-        bl, al = scipy.signal.butter(2, [30, 180], btype='band', fs=SAMPLE_RATE)
+        bl, al = scipy.signal.butter(2, [25, 150], btype='band', fs=SAMPLE_RATE)
        thump = scipy.signal.lfilter(bl, al, numpy.pad(thump_raw, (0, max(0, n_samples - thump_len))))[:thump_len]
    else:
        thump = thump_raw
-    thump *= _exp_decay(thump_len, 15) * 1.0
-    # Deep pitched body — lower than tabla bayan
-    freq = 50 + 60 * numpy.exp(-20 * t)
+    thump *= _exp_decay(thump_len, 10) * 1.2
+    # Deep pitched body with pitch sweep — thunderous boom
+    freq = 45 + 80 * numpy.exp(-15 * t)
    phase = 2 * numpy.pi * numpy.cumsum(freq) / SAMPLE_RATE
-    body = numpy.sin(phase) * _exp_decay(n_samples, 8) * 0.9
-    # Sub boom
-    sub = _sine_f32(35, n_samples) * _exp_decay(n_samples, 10) * 0.6
-    # Stick attack — heavier than tabla palm
-    click_len = min(200, n_samples)
-    click = _noise(click_len) * _exp_decay(click_len, 60) * 0.5
-    result = body + sub
+    body = numpy.sin(phase) * _exp_decay(n_samples, 5) * 1.0
+    # Massive sub boom — sustained
+    sub = _sine_f32(30, n_samples) * _exp_decay(n_samples, 4) * 0.8
+    sub2 = _sine_f32(45, n_samples) * _exp_decay(n_samples, 6) * 0.5
+    # Heavy stick impact
+    click_len = min(300, n_samples)
+    click = _noise(click_len) * _exp_decay(click_len, 40) * 0.6
+    result = body + sub + sub2
    result[:thump_len] += thump
    result[:click_len] += click
-    return numpy.tanh(result * 1.5)
+    return numpy.tanh(result * 1.8)


 def _synth_dhol_tilli(n_samples):
@@ -2485,10 +2604,10 @@ def _synth_dhol_tilli(n_samples):


 def _synth_dhol_both(n_samples):
-    """Dhol both sides — full power bhangra hit."""
-    dagga = _synth_dhol_dagga(n_samples) * 0.6
-    tilli = _synth_dhol_tilli(n_samples) * 0.5
-    return numpy.tanh(dagga + tilli)
+    """Dhol both sides — full power bhangra hit. Thunderous."""
+    dagga = _synth_dhol_dagga(n_samples) * 0.7
+    tilli = _synth_dhol_tilli(n_samples) * 0.45
+    return numpy.tanh((dagga + tilli) * 1.2)


 def _synth_dholak_ge(n_samples):
@@ -2673,62 +2792,91 @@ def _synth_doumbek_ka(n_samples):


 def _synth_cajon_bass(n_samples):
-    """Cajón bass — palm strike on center of the face.
+    """Cajón bass — open palm slaps the center of the plywood face.

-    Deep woody thump. The box resonates like a bass drum but with
-    a warmer, more wooden character.
+    Two sounds happening at once: the fleshy THUD of the palm
+    hitting wood, then the box resonating. The hand sound is
+    a soft, round impact — skin on plywood — followed by the
+    hollow chamber boom.
    """
    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
-    # Wooden box thump
-    thump_len = min(int(SAMPLE_RATE * 0.06), n_samples)
+    # HAND IMPACT — fleshy palm on wood, round and thuddy
+    hand_len = min(int(SAMPLE_RATE * 0.015), n_samples)
+    hand_raw = _noise(hand_len)
+    if hand_len > 10:
+        # Lowpassed — palm is soft, not bright
+        bl, al = scipy.signal.butter(2, 1500 / (SAMPLE_RATE / 2), btype='low')
+        hand = scipy.signal.lfilter(bl, al, numpy.pad(hand_raw, (0, max(0, n_samples - hand_len))))[:hand_len].astype(numpy.float32)
+    else:
+        hand = hand_raw
+    hand *= _exp_decay(hand_len, 100) * 1.0
+    # BOX RESONANCE — hollow chamber thud
+    body = numpy.sin(2 * numpy.pi * 75 * t) * _exp_decay(n_samples, 5) * 0.7
+    box1 = numpy.sin(2 * numpy.pi * 170 * t) * _exp_decay(n_samples, 10) * 0.4
+    box2 = numpy.sin(2 * numpy.pi * 300 * t) * _exp_decay(n_samples, 16) * 0.2
+    # Panel flex — deep sub thud
+    sub = _sine_f32(45, n_samples) * _exp_decay(n_samples, 6) * 0.5
+    # Broader thump from the air cavity
+    thump_len = min(int(SAMPLE_RATE * 0.1), n_samples)
    thump_raw = _noise(thump_len)
-    import scipy.signal as _sig
    if thump_len > 20:
-        bl, al = _sig.butter(2, [40, 200], btype='band', fs=SAMPLE_RATE)
-        thump = _sig.lfilter(bl, al, numpy.pad(thump_raw, (0, max(0, n_samples - thump_len))))[:thump_len].astype(numpy.float32)
+        bl, al = scipy.signal.butter(2, [40, 350], btype='band', fs=SAMPLE_RATE)
+        thump = scipy.signal.lfilter(bl, al, numpy.pad(thump_raw, (0, max(0, n_samples - thump_len))))[:thump_len].astype(numpy.float32)
    else:
        thump = thump_raw
-    thump *= _exp_decay(thump_len, 18) * 0.8
-    body = numpy.sin(2 * numpy.pi * 70 * t) * _exp_decay(n_samples, 7) * 0.8
-    sub = _sine_f32(45, n_samples) * _exp_decay(n_samples, 9) * 0.4
-    click_len = min(200, n_samples)
-    click = _noise(click_len) * _exp_decay(click_len, 45) * 0.3
-    result = body + sub
+    thump *= _exp_decay(thump_len, 12) * 0.6
+    result = body + box1 + box2 + sub
    result[:thump_len] += thump
-    result[:click_len] += click
-    return numpy.tanh(result * 1.3).astype(numpy.float32)
-
-
-def _synth_cajon_slap(n_samples):
-    """Cajón slap — fingers near the top edge, snare wires buzz.
-
-    Bright crack with a buzzy rattle from the internal snare wires.
-    The signature cajón sound — like a snare but woodier.
-    """
-    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
-    # Snare wire buzz
-    wire = _noise(n_samples) * _exp_decay(n_samples, 18) * 0.6
-    import scipy.signal as _sig
-    bl, al = _sig.butter(2, [1500, 6000], btype='band', fs=SAMPLE_RATE)
-    wire = _sig.lfilter(bl, al, wire).astype(numpy.float32) * 1.2
-    # Wood body
-    body = numpy.sin(2 * numpy.pi * 200 * t) * _exp_decay(n_samples, 22) * 0.4
-    # Sharp slap
-    slap_len = min(int(SAMPLE_RATE * 0.008), n_samples)
-    slap = _noise(slap_len) * _exp_decay(slap_len, 200) * 0.8
-    result = body + wire
-    result[:slap_len] += slap
+    result[:hand_len] += hand
    return numpy.tanh(result * 1.5).astype(numpy.float32)


+def _synth_cajon_slap(n_samples):
+    """Cajón slap — fingers near the top edge, pure wood crack.
+
+    No snare wires. Just the sharp crack of fingers on the plywood
+    edge with the box resonance underneath. Dry and woody.
+    """
+    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    # Wood panel resonance — boxy mid
+    body = numpy.sin(2 * numpy.pi * 240 * t) * _exp_decay(n_samples, 28) * 0.4
+    box = numpy.sin(2 * numpy.pi * 400 * t) * _exp_decay(n_samples, 38) * 0.2
+    box2 = numpy.sin(2 * numpy.pi * 600 * t) * _exp_decay(n_samples, 50) * 0.1
+    # Sharp edge slap — fingers on plywood
+    slap_len = min(int(SAMPLE_RATE * 0.004), n_samples)
+    slap = _noise(slap_len) * _exp_decay(slap_len, 300) * 1.0
+    result = body + box + box2
+    result[:slap_len] += slap
+    return numpy.tanh(result * 1.8).astype(numpy.float32)
+
+
+def _synth_cajon_slap_snare(n_samples):
+    """Cajón slap with snare wires — the buzzy version.
+
+    Same edge slap but with internal snare wires rattling.
+    """
+    wood = _synth_cajon_slap(n_samples)
+    # Add snare wire buzz on top
+    wire_len = min(int(SAMPLE_RATE * 0.06), n_samples)
+    wire = _noise(wire_len) * _exp_decay(wire_len, 20) * 0.45
+    if wire_len > 20:
+        bl, al = scipy.signal.butter(2, [1500, 5000], btype='band', fs=SAMPLE_RATE)
+        wire = scipy.signal.lfilter(bl, al, numpy.pad(wire, (0, max(0, n_samples - wire_len))))[:wire_len].astype(numpy.float32)
+    result = wood.copy()
+    result[:wire_len] += wire
+    return numpy.tanh(result * 1.2).astype(numpy.float32)
+
+
 def _synth_cajon_tap(n_samples):
-    """Cajón tap — light fingertip on the face. Ghost note."""
-    n = min(n_samples, int(SAMPLE_RATE * 0.04))
+    """Cajón tap — light fingertip on the plywood face. Ghost note."""
+    n = min(n_samples, int(SAMPLE_RATE * 0.05))
    t = numpy.arange(n, dtype=numpy.float32) / SAMPLE_RATE
-    tap = numpy.sin(2 * numpy.pi * 300 * t) * _exp_decay(n, 35) * 0.3
-    pop = _noise(min(50, n)) * _exp_decay(min(50, n), 250) * 0.5
-    result = tap
-    result[:min(50, n)] += pop
+    # Finger on wood — hollow tap
+    tap = numpy.sin(2 * numpy.pi * 280 * t) * _exp_decay(n, 40) * 0.3
+    box = numpy.sin(2 * numpy.pi * 450 * t) * _exp_decay(n, 55) * 0.12
+    pop = _noise(min(60, n)) * _exp_decay(min(60, n), 200) * 0.4
+    result = tap + box
+    result[:min(60, n)] += pop
    out = numpy.zeros(n_samples, dtype=numpy.float32)
    out[:n] = numpy.tanh(result * 1.5)
    return out
@@ -2796,6 +2944,151 @@ def _synth_metal_hat(n_samples):
    return out


+def _synth_march_snare(n_samples):
+    """Marching snare — ultra-tight kevlar head, high and crisp.
+
+    Higher pitched than a kit snare. Very short decay — all attack,
+    no sustain. Tight snare wires give a brief sizzle.
+    """
+    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    # Higher-pitched body — tight kevlar pops high
+    body = numpy.sin(2 * numpy.pi * 450 * t) * _exp_decay(n_samples, 60) * 0.4
+    body2 = numpy.sin(2 * numpy.pi * 700 * t) * _exp_decay(n_samples, 75) * 0.2
+    # Sharp stick pop
+    click_len = min(int(SAMPLE_RATE * 0.001), n_samples)
+    click = _noise(click_len) * _exp_decay(click_len, 400) * 1.2
+    # Very tight snare sizzle — higher band, shorter
+    buzz_len = min(int(SAMPLE_RATE * 0.025), n_samples)
+    buzz_raw = _noise(buzz_len)
+    if buzz_len > 20:
+        bl, al = scipy.signal.butter(2, [3500, 8000], btype='band', fs=SAMPLE_RATE)
+        buzz = scipy.signal.lfilter(bl, al, numpy.pad(buzz_raw, (0, max(0, n_samples - buzz_len))))[:buzz_len]
+    else:
+        buzz = buzz_raw
+    buzz *= _exp_decay(buzz_len, 50) * 0.35
+    result = body + body2
+    result[:click_len] += click
+    result[:buzz_len] += buzz
+    return numpy.tanh(result * 2.8)
+
+
+def _synth_march_rimshot(n_samples):
+    """Marching rimshot — woody metallic crack.
+
+    The stick catches the rim — you get the full snare hit plus
+    a bright, woody-metallic crack from the aluminum rim. Short
+    ring that dies fast but gives it that cutting edge.
+    """
+    wave = _synth_march_snare(n_samples)
+    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    # Rim crack — bright but short, woody-metallic character
+    rim = numpy.sin(2 * numpy.pi * 1100 * t) * _exp_decay(n_samples, 45) * 0.35
+    rim2 = numpy.sin(2 * numpy.pi * 2200 * t) * _exp_decay(n_samples, 55) * 0.2
+    # Hard transient pop
+    pop_len = min(int(SAMPLE_RATE * 0.002), n_samples)
+    pop = _noise(pop_len) * _exp_decay(pop_len, 350) * 1.5
+    # Extra body punch
+    punch = numpy.sin(2 * numpy.pi * 500 * t) * _exp_decay(n_samples, 65) * 0.3
+    result = wave * 1.4 + rim + rim2 + punch
+    result[:pop_len] += pop
+    return numpy.tanh(result * 2.0)
+
+
+def _synth_march_click(n_samples):
+    """Stick click — taped hickory sticks clocked together.
+
+    Bright wood-on-wood with a slightly dampened attack from the
+    electrical tape. Not as ringy as a clave — the tape absorbs
+    some of the high overtones — but still bright and snappy.
+    """
+    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    # Wood resonance — brighter than before, but tape dampens ring
+    body = numpy.sin(2 * numpy.pi * 1100 * t) * _exp_decay(n_samples, 65) * 0.45
+    body2 = numpy.sin(2 * numpy.pi * 1800 * t) * _exp_decay(n_samples, 80) * 0.25
+    # Woody overtone — gives it that hickory character
+    body3 = numpy.sin(2 * numpy.pi * 2600 * t) * _exp_decay(n_samples, 95) * 0.12
+    # Bright but slightly muffled transient (tape on wood)
+    click_len = min(int(SAMPLE_RATE * 0.001), n_samples)
+    click_raw = _noise(click_len)
+    if click_len > 10:
+        bl, al = scipy.signal.butter(2, [800, 7000], btype='band', fs=SAMPLE_RATE)
+        click = scipy.signal.lfilter(bl, al, numpy.pad(click_raw, (0, max(0, n_samples - click_len))))[:click_len]
+    else:
+        click = click_raw
+    click *= _exp_decay(click_len, 350) * 0.9
+    result = body + body2 + body3
+    result[:click_len] += click
+    return numpy.tanh(result * 2.8)
+
+
+def _synth_quad(n_samples, pitch=300):
+    """Marching tenor/quad drum — tuned mylar head, bright and ringy.
+
+    Quads have a distinctive metallic ting from the high-tension
+    mylar head and aluminum shell. More ring than a kit tom,
+    brighter attack, clear pitch.
+    """
+    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    # Pitched body — more ring/sustain than snare
+    body = numpy.sin(2 * numpy.pi * pitch * t) * _exp_decay(n_samples, 22) * 0.5
+    # Metallic overtones — the ting
+    ting = numpy.sin(2 * numpy.pi * pitch * 2.3 * t) * _exp_decay(n_samples, 35) * 0.25
+    ting2 = numpy.sin(2 * numpy.pi * pitch * 3.1 * t) * _exp_decay(n_samples, 45) * 0.12
+    # Shell ring
+    shell = numpy.sin(2 * numpy.pi * pitch * 4.7 * t) * _exp_decay(n_samples, 55) * 0.06
+    # Sharp stick attack
+    click_len = min(int(SAMPLE_RATE * 0.001), n_samples)
+    click = _noise(click_len) * _exp_decay(click_len, 400) * 0.8
+    result = body + ting + ting2 + shell
+    result[:click_len] += click
+    return numpy.tanh(result * 2.5)
+
+
+def _synth_quad_spock(n_samples):
+    """Quad spock — rim shot on the tenor shell. Bright, ringy, cutting."""
+    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    ring = numpy.sin(2 * numpy.pi * 1400 * t) * _exp_decay(n_samples, 40) * 0.5
+    ring2 = numpy.sin(2 * numpy.pi * 2100 * t) * _exp_decay(n_samples, 55) * 0.25
+    click_len = min(int(SAMPLE_RATE * 0.001), n_samples)
+    click = _noise(click_len) * _exp_decay(click_len, 400) * 1.0
+    result = ring + ring2
+    result[:click_len] += click
+    return numpy.tanh(result * 2.8)
+
+
+def _synth_march_bass(n_samples, pitch=60):
+    """Marching bass drum — deep, boomy, pitched, felt beater thwack.
+
+    The beater hitting the head is a big part of the sound — a round,
+    pillowy thwack followed by the deep pitched boom. More beater
+    sound than a kit bass drum because marching bass drums project
+    outward.
+    """
+    t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
+    # Deep pitched body — sustains and rings
+    body = numpy.sin(2 * numpy.pi * pitch * t) * _exp_decay(n_samples, 10) * 0.7
+    body2 = numpy.sin(2 * numpy.pi * pitch * 2 * t) * _exp_decay(n_samples, 16) * 0.2
+    # Sub thump
+    sub = numpy.sin(2 * numpy.pi * pitch * 0.5 * t) * _exp_decay(n_samples, 8) * 0.3
+    # BIG beater thwack — dominant part of the attack
+    thwack_len = min(int(SAMPLE_RATE * 0.025), n_samples)
+    thwack_raw = _noise(thwack_len)
+    if thwack_len > 10:
+        bl, al = scipy.signal.butter(2, [150, 2500], btype='band', fs=SAMPLE_RATE)
+        thwack = scipy.signal.lfilter(bl, al, numpy.pad(thwack_raw, (0, max(0, n_samples - thwack_len))))[:thwack_len]
+    else:
+        thwack = thwack_raw
+    thwack *= _exp_decay(thwack_len, 55) * 1.5
+    # Head slap — the mylar flexing on impact
+    slap_len = min(int(SAMPLE_RATE * 0.008), n_samples)
+    slap = numpy.sin(2 * numpy.pi * pitch * 3 * numpy.arange(slap_len, dtype=numpy.float32) / SAMPLE_RATE)
+    slap *= _exp_decay(slap_len, 90) * 0.4
+    result = body + body2 + sub
+    result[:thwack_len] += thwack
+    result[:slap_len] += slap
+    return numpy.tanh(result * 2.0)
+
+
 def _synth_tabla_ge_bend(n_samples):
    """Tabla Ge with upward pitch bend — palm pressing into bayan head.

@@ -3007,15 +3300,45 @@ def _render_drum_hit(sound_value, n_samples):
        # Cajon
        DrumSound.CAJON_BASS.value: lambda n: _synth_cajon_bass(n),
        DrumSound.CAJON_SLAP.value: lambda n: _synth_cajon_slap(n),
+        DrumSound.CAJON_SLAP_SNARE.value: lambda n: _synth_cajon_slap_snare(n),
        DrumSound.CAJON_TAP.value: lambda n: _synth_cajon_tap(n),
        # Metal kit
        DrumSound.METAL_KICK.value: lambda n: _synth_metal_kick(n),
        DrumSound.METAL_SNARE.value: lambda n: _synth_metal_snare(n),
        DrumSound.METAL_HAT.value: lambda n: _synth_metal_hat(n),
+        # Marching
+        DrumSound.MARCH_SNARE.value: lambda n: _synth_march_snare(n),
+        DrumSound.MARCH_RIMSHOT.value: lambda n: _synth_march_rimshot(n),
+        DrumSound.MARCH_CLICK.value: lambda n: _synth_march_click(n),
+        # Quads (tenor drums) — pitched high to low
+        DrumSound.QUAD_1.value: lambda n: _synth_quad(n, pitch=400),
+        DrumSound.QUAD_2.value: lambda n: _synth_quad(n, pitch=330),
+        DrumSound.QUAD_3.value: lambda n: _synth_quad(n, pitch=270),
+        DrumSound.QUAD_4.value: lambda n: _synth_quad(n, pitch=220),
+        DrumSound.QUAD_SPOCK.value: lambda n: _synth_quad_spock(n),
+        # Marching bass drums — pitched high to low
+        DrumSound.BASS_1.value: lambda n: _synth_march_bass(n, pitch=90),
+        DrumSound.BASS_2.value: lambda n: _synth_march_bass(n, pitch=75),
+        DrumSound.BASS_3.value: lambda n: _synth_march_bass(n, pitch=62),
+        DrumSound.BASS_4.value: lambda n: _synth_march_bass(n, pitch=52),
+        DrumSound.BASS_5.value: lambda n: _synth_march_bass(n, pitch=42),
    }

    renderer = _dispatch.get(sound_value, lambda n: _synth_clave(n))
-    return renderer(n_samples)
+    result = renderer(n_samples)
+    return result
+
+
+# Drum hit cache — same sound at same length sounds identical
+_drum_cache = {}
+
+
+def _render_drum_hit_cached(sound_value, n_samples):
+    """Cached version of _render_drum_hit for pattern playback."""
+    key = (sound_value, n_samples)
+    if key not in _drum_cache:
+        _drum_cache[key] = _render_drum_hit(sound_value, n_samples)
+    return _drum_cache[key].copy()  # copy so callers can mutate


 def _render_pattern(pattern, bpm=120):
@@ -3039,7 +3362,7 @@ def _render_pattern(pattern, bpm=120):
        remaining = total_samples - start
        # Render each hit for up to 0.5 seconds
        hit_len = min(int(SAMPLE_RATE * 0.5), remaining)
-        wave = _render_drum_hit(hit.sound.value, hit_len)
+        wave = _render_drum_hit_cached(hit.sound.value, hit_len)
        vel_scale = hit.velocity / 127.0
        buf[start:start + hit_len] += wave * vel_scale

@@ -4316,12 +4639,6 @@ def _render_notes_to_buf(notes, buf, samples_per_beat, total_samples,
                    vel_cutoff = vel_to_filter * vel_scale + 1000
                    mixed = _apply_lowpass(mixed, vel_cutoff, q=filter_q)
                end = min(start + len(mixed), total_samples)
-                # Choke: fade out any existing signal at this point
-                # so new notes don't pile up on previous tails
-                choke_len = min(int(SAMPLE_RATE * 0.003), start)
-                if choke_len > 0:
-                    fade = numpy.linspace(1.0, 0.0, choke_len).astype(numpy.float32)
-                    buf[start - choke_len:start] *= fade
                buf[start:end] += mixed[:end - start] * volume * vel_scale
                # Spread detuned oscillators into stereo L/R
                if detune_up is not None and stereo_buf is not None:
@@ -4496,35 +4813,71 @@ def render_score(score):
                synth_kwargs["mod_index"] = part.fm_index
            _temperament = getattr(score, 'temperament', 'equal')
            _ref_pitch = getattr(score, 'reference_pitch', 440.0)
-            if part.legato:
-                _render_legato_to_buf(
-                    part.notes, part_buf, samples_per_beat, total_samples,
-                    synth_fn, env_tuple, part.volume, score.bpm,
-                    glide_time=part.glide, swing=effective_swing,
-                    tempo_map=tempo_map if has_tempo_changes else None,
-                    temperament=_temperament, reference_pitch=_ref_pitch)
-            else:
-                _render_notes_to_buf(
-                    part.notes, part_buf, samples_per_beat, total_samples,
-                    synth_fn, env_tuple, part.volume, score.bpm,
-                    swing=effective_swing,
-                    tempo_map=tempo_map if has_tempo_changes else None,
-                    humanize=part.humanize,
-                    detune=part.detune,
-                    spread=part.spread,
-                    stereo_buf=stereo_buf,
-                    sub_osc=part.sub_osc,
-                    noise_mix=part.noise_mix,
-                    filter_attack=part.filter_attack,
-                    filter_decay=part.filter_decay,
-                    filter_sustain=part.filter_sustain,
-                    filter_amount=part.filter_amount,
-                    vel_to_filter=part.vel_to_filter,
-                    filter_q=part.lowpass_q,
-                    synth_kwargs=synth_kwargs,
-                    temperament=_temperament,
-                    reference_pitch=_ref_pitch,
-                    analog=part.analog)
+
+            n_ensemble = max(1, getattr(part, 'ensemble', 1))
+
+            for _ens_i in range(n_ensemble):
+                # Each ensemble voice gets its own buffer
+                ens_buf = part_buf if n_ensemble == 1 else numpy.zeros(total_samples, dtype=numpy.float32)
+                # Ensemble voices get micro-variations
+                ens_humanize = part.humanize
+                ens_analog = part.analog
+                if n_ensemble > 1:
+                    import random as _ens_rnd
+                    _ens_rnd.seed(42 + _ens_i * 7)
+                    # Hybrid approach:
+                    # 1. Consistent player tendency (rush/drag) — seeded per player
+                    _player_tendency = _ens_rnd.gauss(0, 0.018)
+                    # 2. Tiny per-note wobble on top
+                    ens_humanize = max(part.humanize, 0.012)
+                    # Each player's drum tuned slightly different
+                    ens_analog = max(part.analog, 0.06 + _ens_rnd.uniform(0, 0.08))
+
+                if part.legato:
+                    _render_legato_to_buf(
+                        part.notes, ens_buf, samples_per_beat, total_samples,
+                        synth_fn, env_tuple, part.volume, score.bpm,
+                        glide_time=part.glide, swing=effective_swing,
+                        tempo_map=tempo_map if has_tempo_changes else None,
+                        temperament=_temperament, reference_pitch=_ref_pitch)
+                else:
+                    _render_notes_to_buf(
+                        part.notes, ens_buf, samples_per_beat, total_samples,
+                        synth_fn, env_tuple, part.volume, score.bpm,
+                        swing=effective_swing,
+                        tempo_map=tempo_map if has_tempo_changes else None,
+                        humanize=ens_humanize,
+                        detune=part.detune,
+                        spread=part.spread,
+                        stereo_buf=stereo_buf,
+                        sub_osc=part.sub_osc,
+                        noise_mix=part.noise_mix,
+                        filter_attack=part.filter_attack,
+                        filter_decay=part.filter_decay,
+                        filter_sustain=part.filter_sustain,
+                        filter_amount=part.filter_amount,
+                        vel_to_filter=part.vel_to_filter,
+                        filter_q=part.lowpass_q,
+                        synth_kwargs=synth_kwargs,
+                        temperament=_temperament,
+                        reference_pitch=_ref_pitch,
+                        analog=ens_analog)
+
+                if n_ensemble > 1:
+                    # Shift the whole voice by the player's consistent tendency
+                    # (some players rush, some drag — this is fixed per player)
+                    shift_samples = int(_player_tendency * samples_per_beat)
+                    if shift_samples > 0 and shift_samples < total_samples:
+                        # Player drags — shift right
+                        shifted = numpy.zeros_like(ens_buf)
+                        shifted[shift_samples:] = ens_buf[:-shift_samples]
+                        ens_buf = shifted
+                    elif shift_samples < 0 and abs(shift_samples) < total_samples:
+                        # Player rushes — shift left
+                        shifted = numpy.zeros_like(ens_buf)
+                        shifted[:shift_samples] = ens_buf[-shift_samples:]
+                        ens_buf = shifted
+                    part_buf += ens_buf / n_ensemble

            # Apply effects — segmented if automation exists
            auto_points = part._get_automation_points()
@@ -4652,11 +5005,28 @@ def render_score(score):
        # Cajon — centered (single instrument)
        DrumSound.CAJON_BASS.value: 0.0,
        DrumSound.CAJON_SLAP.value: 0.0,
+        DrumSound.CAJON_SLAP_SNARE.value: 0.0,
        DrumSound.CAJON_TAP.value: 0.1,
        # Metal kit
        DrumSound.METAL_KICK.value: 0.0,
        DrumSound.METAL_SNARE.value: 0.0,
        DrumSound.METAL_HAT.value: 0.3,
+        # Marching — centered
+        DrumSound.MARCH_SNARE.value: 0.0,
+        DrumSound.MARCH_RIMSHOT.value: 0.0,
+        DrumSound.MARCH_CLICK.value: 0.0,
+        # Quads — spread across the field
+        DrumSound.QUAD_1.value: -0.3,
+        DrumSound.QUAD_2.value: -0.1,
+        DrumSound.QUAD_3.value: 0.1,
+        DrumSound.QUAD_4.value: 0.3,
+        DrumSound.QUAD_SPOCK.value: 0.0,
+        # Bass drums — spread wide
+        DrumSound.BASS_1.value: -0.5,
+        DrumSound.BASS_2.value: -0.25,
+        DrumSound.BASS_3.value: 0.0,
+        DrumSound.BASS_4.value: 0.25,
+        DrumSound.BASS_5.value: 0.5,
    }

    # Render all drum Parts (may be one "drums" or split into kick/snare/hats/etc.)
@@ -4672,6 +5042,7 @@ def render_score(score):
        # Track last hit position per sound for choke (new hit dampens
        # the previous ring on the same drum)
        _last_hit_start = {}
+        _resonance = {}  # sound_id → resonance level (0.0–1.0)

        for hit in drum_part._drum_hits:
            pos = hit.position
@@ -4735,12 +5106,45 @@ def render_score(score):

            remaining = total_samples - start
            hit_len = min(int(SAMPLE_RATE * 0.5), remaining)
-            wave = _render_drum_hit(hit.sound.value, hit_len)
+            wave = _render_drum_hit_cached(hit.sound.value, hit_len)
            vel = hit.velocity
            if drum_humanize > 0:
                vel_jitter = int(drum_humanize * 10)
                vel = max(1, min(127, vel + _drum_rnd.randint(-vel_jitter, vel_jitter)))
            vel_scale = vel / 127.0
+
+            # Sympathetic resonance: marching snare builds up buzz
+            # as hits accumulate. Each hit adds to a resonance counter
+            # that scales extra snare wire buzz into the sound.
+            _RESONANCE_SOUNDS = {
+                DrumSound.MARCH_SNARE.value, DrumSound.MARCH_RIMSHOT.value,
+            }
+            if sound_id in _RESONANCE_SOUNDS:
+                reso = _resonance.get(sound_id, 0.0)
+                # Decay based on gap since last hit
+                if sound_id in _last_hit_start:
+                    gap_samples = start - _last_hit_start[sound_id]
+                    gap_sec = gap_samples / SAMPLE_RATE
+                    if gap_sec > 1.0:
+                        reso *= 0.2
+                    elif gap_sec > 0.5:
+                        reso *= 0.5
+                    elif gap_sec > 0.25:
+                        reso *= 0.8
+                # Build up (caps at 0.6)
+                reso = min(0.6, reso + 0.08)
+                _resonance[sound_id] = reso
+                # Add sympathetic buzz proportional to resonance
+                if reso > 0.1:
+                    buzz_len = min(int(SAMPLE_RATE * 0.06), hit_len)
+                    buzz = _noise(buzz_len) * reso * 0.18
+                    if buzz_len > 20:
+                        bl, al = scipy.signal.butter(
+                            2, [3000, 9000], btype='band', fs=SAMPLE_RATE)
+                        buzz = scipy.signal.lfilter(bl, al, buzz)
+                    buzz *= _exp_decay(buzz_len, 25)
+                    wave[:buzz_len] = wave[:buzz_len] + buzz.astype(numpy.float32)
+
            mono_hit = wave * vel_scale * 0.7
            # Sidechain trigger — kick only
            if hit.sound.value == DrumSound.KICK.value:
@@ -17,13 +17,11 @@ INSTRUMENTS = {
        "synth": "piano_synth", "envelope": "none",
        "vel_to_filter": 3000,
    },
-    "electric_piano": {  # Rhodes/Wurlitzer
-        "synth": "fm", "envelope": "piano",
-        "fm_ratio": 1.0, "fm_index": 2.0,
-        "detune": 6, "chorus": 0.2, "chorus_rate": 1.0,
-        "lowpass": 4000, "saturation": 0.15,
-        "tremolo_depth": 0.15, "tremolo_rate": 4.5,
-        "analog": 0.2,
+    "electric_piano": {  # Rhodes
+        "synth": "rhodes_synth", "envelope": "none",
+        "chorus": 0.15, "chorus_rate": 1.0,
+        "tremolo_depth": 0.12, "tremolo_rate": 4.5,
+        "analog": 0.15,
    },
    "organ": {
        "synth": "organ_synth", "envelope": "organ",
@@ -558,12 +556,29 @@ class DrumSound(Enum):
    DOUMBEK_KA = 114     # muted edge slap
    # Cajon sounds
    CAJON_BASS = 108     # center of face, deep thump
-    CAJON_SLAP = 109     # top edge, snare wires buzz
+    CAJON_SLAP = 109     # top edge, wood crack (no snare wires)
    CAJON_TAP = 110      # light finger tap
+    CAJON_SLAP_SNARE = 111  # top edge with snare wires engaged
    # Metal kit — tighter, punchier, more attack
    METAL_KICK = 105     # clicky, punchy, tight
    METAL_SNARE = 106    # crack, bright, cutting
    METAL_HAT = 107      # tight, short, precise
+    # Marching percussion
+    MARCH_SNARE = 115    # tight, high-tension kevlar head, snare buzz
+    MARCH_RIMSHOT = 116  # stick hits rim + head simultaneously, cracking
+    MARCH_CLICK = 118    # stick click — sticks hit together, no drum
+    # Quads (tenor drums) — 4 drums high to low + spock (rim)
+    QUAD_1 = 119         # highest tenor drum
+    QUAD_2 = 120         # second tenor
+    QUAD_3 = 121         # third tenor
+    QUAD_4 = 122         # lowest tenor (floor tom-ish)
+    QUAD_SPOCK = 123     # rim click on quad shell
+    # Marching bass drums — 5 drums pitched high to low
+    BASS_1 = 124         # highest (smallest) bass drum
+    BASS_2 = 125         # second
+    BASS_3 = 126         # middle
+    BASS_4 = 127         # fourth
+    BASS_5 = 80          # lowest (biggest) bass drum


 class _DrumTone:
@@ -1602,6 +1617,231 @@ Pattern._PRESETS["tabla solo"] = dict(
    ],
 )

+# ── Marching snare patterns ───────────────────────────────────────────────
+MS = DrumSound.MARCH_SNARE
+MR = DrumSound.MARCH_RIMSHOT
+MC = DrumSound.MARCH_CLICK
+Q1 = DrumSound.QUAD_1
+Q2 = DrumSound.QUAD_2
+Q3 = DrumSound.QUAD_3
+Q4 = DrumSound.QUAD_4
+QS = DrumSound.QUAD_SPOCK
+B1 = DrumSound.BASS_1
+B2 = DrumSound.BASS_2
+B3 = DrumSound.BASS_3
+B4 = DrumSound.BASS_4
+B5 = DrumSound.BASS_5
+
+# Marching basic — standard 4/4 march with rimshot accents on 2 and 4
+Pattern._PRESETS["march"] = dict(
+    name="march",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(MS, 0.0, 80), _h(MS, 0.5, 55),
+        _h(MR, 1.0, 100), _h(MS, 1.5, 55),
+        _h(MS, 2.0, 80), _h(MS, 2.5, 55),
+        _h(MR, 3.0, 100), _h(MS, 3.5, 55),
+    ],
+)
+
+# Cadence — 8-beat street beat pattern (the classic drumline cadence)
+Pattern._PRESETS["cadence"] = dict(
+    name="cadence",
+    time_signature="4/4",
+    beats=8.0,
+    hits=[
+        # Bar 1: syncopated groove
+        _h(MR, 0.0, 105), _h(MS, 0.25, 60), _h(MS, 0.5, 65),
+        _h(MS, 0.75, 55), _h(MR, 1.0, 100),
+        _h(MS, 1.5, 60), _h(MS, 1.75, 58),
+        _h(MR, 2.0, 105), _h(MS, 2.5, 62),
+        _h(MS, 2.75, 55), _h(MR, 3.0, 100),
+        _h(MS, 3.25, 58), _h(MS, 3.5, 60), _h(MS, 3.75, 55),
+        # Bar 2: answer phrase with flams
+        _h(MR, 4.0, 110), _h(MS, 4.25, 62), _h(MS, 4.5, 65),
+        _h(MR, 5.0, 105), _h(MS, 5.25, 58),
+        _h(MS, 5.5, 60), _h(MS, 5.75, 55),
+        _h(MR, 6.0, 110), _h(MS, 6.25, 62),
+        _h(MS, 6.5, 65), _h(MS, 6.75, 62),
+        _h(MR, 7.0, 115), _h(MS, 7.25, 60),
+        _h(MR, 7.5, 110), _h(MR, 7.75, 115),
+    ],
+)
+
+# Paradiddle — RLRR LRLL on marching snare
+Pattern._PRESETS["march paradiddle"] = dict(
+    name="march paradiddle",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # RLRR (R=rimshot accent, L=tap)
+        _h(MR, 0.0, 100), _h(MS, 0.25, 58), _h(MR, 0.5, 65), _h(MR, 0.75, 62),
+        # LRLL
+        _h(MS, 1.0, 58), _h(MR, 1.25, 100), _h(MS, 1.5, 58), _h(MS, 1.75, 55),
+        # RLRR
+        _h(MR, 2.0, 102), _h(MS, 2.25, 60), _h(MR, 2.5, 68), _h(MR, 2.75, 65),
+        # LRLL
+        _h(MS, 3.0, 60), _h(MR, 3.25, 102), _h(MS, 3.5, 60), _h(MS, 3.75, 58),
+    ],
+)
+
+# March roll — buzz roll crescendo
+Pattern._PRESETS["march roll"] = dict(
+    name="march roll",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Buzz roll as rapid 32nds, crescendo
+        *[_h(MS, i * 0.125, 40 + i * 3) for i in range(28)],
+        # Land on rimshot
+        _h(MR, 3.5, 115), _h(MR, 3.75, 120),
+    ],
+)
+
+# Quad sweep — run across all 4 drums
+Pattern._PRESETS["quad sweep"] = dict(
+    name="quad sweep",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Sweep down
+        _h(Q1, 0.0, 95), _h(Q2, 0.25, 90), _h(Q3, 0.5, 85), _h(Q4, 0.75, 80),
+        # Sweep up
+        _h(Q4, 1.0, 80), _h(Q3, 1.25, 85), _h(Q2, 1.5, 90), _h(Q1, 1.75, 95),
+        # Double sweep with spocks
+        _h(Q1, 2.0, 98), _h(Q2, 2.125, 92), _h(Q3, 2.25, 88), _h(Q4, 2.375, 82),
+        _h(Q4, 2.5, 82), _h(Q3, 2.625, 88), _h(Q2, 2.75, 92), _h(Q1, 2.875, 98),
+        # Spock accents
+        _h(QS, 3.0, 105), _h(Q1, 3.25, 90), _h(QS, 3.5, 105), _h(Q4, 3.75, 85),
+    ],
+)
+
+# Quad groove — accented pattern with sweeps
+Pattern._PRESETS["quad groove"] = dict(
+    name="quad groove",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(Q1, 0.0, 100), _h(Q3, 0.25, 55), _h(Q1, 0.5, 60),
+        _h(Q2, 0.75, 55), _h(Q3, 1.0, 95), _h(Q1, 1.25, 55),
+        _h(Q4, 1.5, 58), _h(Q2, 1.75, 55),
+        _h(Q1, 2.0, 100), _h(Q2, 2.25, 55), _h(Q3, 2.5, 58),
+        _h(Q4, 2.75, 55), _h(QS, 3.0, 105), _h(Q3, 3.25, 55),
+        _h(Q2, 3.5, 58), _h(Q1, 3.75, 60),
+    ],
+)
+
+# Bass split — classic bass drum splits across the line
+Pattern._PRESETS["bass split"] = dict(
+    name="bass split",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Each bass drum takes a 16th, cascading down then up
+        _h(B1, 0.0, 95), _h(B2, 0.25, 90), _h(B3, 0.5, 85),
+        _h(B4, 0.75, 80), _h(B5, 1.0, 95),
+        _h(B5, 1.5, 90), _h(B4, 1.75, 85),
+        _h(B3, 2.0, 95), _h(B2, 2.25, 90), _h(B1, 2.5, 95),
+        _h(B1, 2.75, 85), _h(B3, 3.0, 100),
+        _h(B5, 3.25, 95), _h(B3, 3.5, 90), _h(B1, 3.75, 95),
+    ],
+)
+
+# Bass unison — all bass drums hit together on accents
+Pattern._PRESETS["bass unison"] = dict(
+    name="bass unison",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # All 5 hit on beat 1
+        _h(B1, 0.0, 100), _h(B2, 0.0, 100), _h(B3, 0.0, 100),
+        _h(B4, 0.0, 100), _h(B5, 0.0, 100),
+        # Split on beat 2
+        _h(B1, 1.0, 90), _h(B3, 1.25, 85), _h(B5, 1.5, 90),
+        # All on beat 3
+        _h(B1, 2.0, 100), _h(B2, 2.0, 100), _h(B3, 2.0, 100),
+        _h(B4, 2.0, 100), _h(B5, 2.0, 100),
+        # Cascade into beat 4
+        _h(B5, 2.75, 80), _h(B4, 3.0, 85), _h(B3, 3.25, 90),
+        _h(B2, 3.5, 95), _h(B1, 3.75, 100),
+    ],
+)
+
+# Full drumline — snare + quads + bass together
+Pattern._PRESETS["drumline"] = dict(
+    name="drumline",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Snare backbone
+        _h(MR, 0.0, 115), _h(MS, 0.25, 35), _h(MS, 0.5, 38), _h(MS, 0.75, 32),
+        _h(MR, 1.0, 112), _h(MS, 1.25, 35), _h(MS, 1.5, 32), _h(MS, 1.75, 38),
+        _h(MR, 2.0, 115), _h(MS, 2.25, 38), _h(MS, 2.5, 32), _h(MS, 2.75, 35),
+        _h(MR, 3.0, 118), _h(MS, 3.25, 35), _h(MS, 3.5, 32), _h(MS, 3.75, 38),
+        # Quads on accents
+        _h(Q1, 0.0, 95), _h(Q3, 0.5, 55), _h(Q2, 1.0, 90),
+        _h(Q4, 1.5, 55), _h(Q1, 2.0, 95), _h(Q3, 2.5, 55),
+        _h(QS, 3.0, 100), _h(Q2, 3.5, 55),
+        # Bass on the big beats
+        _h(B3, 0.0, 100), _h(B5, 1.0, 95),
+        _h(B1, 2.0, 100), _h(B3, 3.0, 95),
+    ],
+)
+
+# Chakradar — tihai of tihais (16 beats / 4 bars)
+# A phrase (Dha Tit Tit Dha Ge Na) is played 3x with increasing intensity,
+# and within each repetition the final 3 hits form a mini-tihai landing on sam.
+_chakra_phrase_a = [
+    # Phrase 1 (4 beats): moderate
+    _h(TDHA, 0.0, 85), _h(TTIT, 0.25, 48), _h(TTIT, 0.5, 50),
+    _h(TDHA, 0.75, 80), _h(TGE, 1.0, 72),
+    _h(TNA, 1.5, 68), _h(TTIT, 1.75, 45),
+    # Mini-tihai: Na Dha, Na Dha, Na Dha
+    _h(TNA, 2.0, 72), _h(TDHA, 2.25, 82),
+    _h(TNA, 2.5, 75), _h(TDHA, 2.75, 85),
+    _h(TNA, 3.0, 78), _h(TDHA, 3.25, 90),
+    _h(TTIT, 3.5, 42), _h(TTIT, 3.75, 45),
+]
+_chakra_phrase_b = [
+    # Phrase 2 (4 beats): louder, busier
+    _h(TDHA, 4.0, 95), _h(TTIT, 4.125, 50), _h(TTIT, 4.25, 52),
+    _h(TKE, 4.375, 48), _h(TDHA, 4.5, 90), _h(TGE, 4.75, 78),
+    _h(TNA, 5.0, 75), _h(TTIT, 5.25, 48), _h(TTIT, 5.5, 50),
+    _h(TNA, 5.75, 72),
+    # Mini-tihai: Na Dha Ge, Na Dha Ge, Na Dha Ge
+    _h(TNA, 6.0, 80), _h(TDHA, 6.25, 92), _h(TGE, 6.5, 78),
+    _h(TNA, 6.75, 82), _h(TDHA, 7.0, 95), _h(TGE, 7.25, 82),
+    _h(TNA, 7.5, 85), _h(TDHA, 7.75, 100),
+]
+_chakra_phrase_c = [
+    # Phrase 3 (4 beats): peak intensity, fastest
+    _h(TDHA, 8.0, 105), _h(TTIT, 8.125, 55), _h(TTIT, 8.25, 58),
+    _h(TKE, 8.375, 52), _h(TNA, 8.5, 85), _h(TTIT, 8.625, 50),
+    _h(TDHA, 8.75, 100), _h(TGE, 9.0, 85),
+    _h(TNA, 9.25, 82), _h(TTIT, 9.5, 55), _h(TTIT, 9.625, 58),
+    _h(TKE, 9.75, 52), _h(TNA, 10.0, 88),
+    # Final tihai — 3x Dha Tit Na Dha landing on sam
+    _h(TDHA, 10.5, 105), _h(TTIT, 10.625, 58), _h(TNA, 10.75, 90),
+    _h(TDHA, 11.0, 108), _h(TTIT, 11.125, 60), _h(TNA, 11.25, 92),
+    _h(TDHA, 11.5, 112), _h(TTIT, 11.625, 62), _h(TNA, 11.75, 95),
+]
+_chakra_finale = [
+    # Bar 4: crescendo triplets into massive sam
+    *[_h(TTIT, 12.0 + i * (1/6), 50 + i * 5) for i in range(12)],
+    _h(TDHA, 14.0, 115), _h(TNA, 14.25, 85), _h(TDHA, 14.5, 118),
+    _h(TNA, 14.75, 88),
+    _h(TDHA, 15.0, 120), _h(TGE, 15.25, 95),
+    _h(TDHA, 15.5, 125), _h(DrumSound.TABLA_GE_BEND, 15.75, 110),
+]
+
+Pattern._PRESETS["chakradar"] = dict(
+    name="chakradar",
+    time_signature="4/4",
+    beats=16.0,
+    hits=_chakra_phrase_a + _chakra_phrase_b + _chakra_phrase_c + _chakra_finale,
+)
+
 # ── Doumbek patterns ──────────────────────────────────────────────────────
 DKD = DrumSound.DOUMBEK_DUM
 DKT = DrumSound.DOUMBEK_TEK
@@ -2580,6 +2820,7 @@ class Part:
                 cabinet: float = 0.0,
                 cabinet_brightness: float = 0.5,
                 analog: float = 0.0,
+                 ensemble: int = 1,
                 fm_ratio: float = 2.0,
                 fm_index: float = 3.0):
        self.name = name
@@ -2626,6 +2867,7 @@ class Part:
        self.cabinet = cabinet
        self.cabinet_brightness = cabinet_brightness
        self.analog = analog
+        self.ensemble = ensemble
        self.fm_ratio = fm_ratio
        self.fm_index = fm_index
        self._system = "western"  # default, overridden by Score.part()
@@ -2720,6 +2962,85 @@ class Part:
                               velocity=velocity, articulation=articulation))
        return self

+    def flam(self, sound, duration=Duration.QUARTER, *, velocity: int = 110,
+             gap: float = 0.015, grace_vel: float = 0.3,
+             articulation: str = "") -> "Part":
+        """Add a flam — a grace note immediately before the main hit.
+
+        The grace note is nearly simultaneous with the main hit,
+        thickening the attack. Tighter gap = more like one fat hit,
+        wider gap = audible double.
+
+        Args:
+            sound: A :class:`DrumSound` enum member.
+            duration: Total duration the flam occupies.
+            velocity: Main hit velocity.
+            gap: Beats between grace and main (default 0.008 ≈ 4ms at 120).
+            grace_vel: Grace note velocity as fraction of main (default 0.3).
+            articulation: Optional articulation for the main hit.
+
+        Example::
+
+            >>> p.flam(DrumSound.MARCH_SNARE, Duration.QUARTER, velocity=120)
+        """
+        if isinstance(duration, (int, float)):
+            dur_val = duration
+        else:
+            dur_val = duration.value if hasattr(duration, 'value') else float(duration)
+        self.hit(sound, gap, velocity=int(velocity * grace_vel))
+        self.hit(sound, dur_val - gap, velocity=velocity, articulation=articulation)
+        return self
+
+    def diddle(self, sound, duration=Duration.EIGHTH, *,
+               velocity: int = 70) -> "Part":
+        """Add a diddle — two equal strokes in the space of one note.
+
+        A double-stroke roll building block. Two hits split evenly
+        across the duration.
+
+        Args:
+            sound: A :class:`DrumSound` enum member.
+            duration: Total duration (default 8th note). Each stroke
+                gets half.
+            velocity: Velocity for both strokes.
+
+        Example::
+
+            >>> p.diddle(DrumSound.MARCH_SNARE, Duration.EIGHTH, velocity=60)
+        """
+        if isinstance(duration, (int, float)):
+            dur_val = duration
+        else:
+            dur_val = duration.value if hasattr(duration, 'value') else float(duration)
+        half = dur_val / 2
+        self.hit(sound, half, velocity=velocity)
+        self.hit(sound, half, velocity=int(velocity * 0.9))
+        return self
+
+    def cheese(self, sound, duration=Duration.QUARTER, *, velocity: int = 110,
+               gap: float = 0.008, grace_vel: float = 0.3) -> "Part":
+        """Add a cheese — a flam followed by a diddle.
+
+        Common marching rudiment: grace-MAIN-tap-tap.
+
+        Args:
+            sound: A :class:`DrumSound` enum member.
+            duration: Total duration.
+            velocity: Main hit velocity.
+        """
+        if isinstance(duration, (int, float)):
+            dur_val = duration
+        else:
+            dur_val = duration.value if hasattr(duration, 'value') else float(duration)
+        # Flam takes first half, diddle takes second half
+        flam_dur = dur_val * 0.5
+        diddle_dur = dur_val * 0.5
+        self.hit(sound, gap, velocity=int(velocity * grace_vel))
+        self.hit(sound, flam_dur - gap, velocity=velocity)
+        self.hit(sound, diddle_dur / 2, velocity=int(velocity * 0.5))
+        self.hit(sound, diddle_dur / 2, velocity=int(velocity * 0.45))
+        return self
+
    def crescendo(self, notes, duration=Duration.QUARTER, *,
                  start_vel: int = 40, end_vel: int = 110,
                  articulation: str = "") -> "Part":
@@ -3535,6 +3856,7 @@ class Score:
             cabinet: float = None,
             cabinet_brightness: float = None,
             analog: float = None,
+             ensemble: int = None,
             fm_ratio: float = None,
             fm_index: float = None,
             fretboard=None) -> Part:
@@ -3647,7 +3969,7 @@ class Score:
            "tremolo_depth": tremolo_depth, "tremolo_rate": tremolo_rate,
            "phaser": phaser, "phaser_rate": phaser_rate,
            "cabinet": cabinet, "cabinet_brightness": cabinet_brightness,
-            "analog": analog,
+            "analog": analog, "ensemble": ensemble,
            "fm_ratio": fm_ratio, "fm_index": fm_index,
        }
        for k, v in _locals.items():
@@ -7164,3 +7164,200 @@ def test_all_synths_render_and_enum_match():
    for s in Synth:
        wave = s(440, n_samples=1000)
        assert len(wave) == 1000
+
+
+# ── Articulations ────────────────────────────────────────────────────────
+
+def test_articulation_field_on_note():
+    from pytheory.rhythm import Note, Duration
+    n = Note(tone=None, duration=Duration.QUARTER, articulation="staccato")
+    assert n.articulation == "staccato"
+
+
+def test_articulation_default_empty():
+    from pytheory.rhythm import Note, Duration
+    n = Note(tone=None, duration=Duration.QUARTER)
+    assert n.articulation == ""
+
+
+def test_part_add_articulation():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="sine")
+    p.add("C4", Duration.QUARTER, articulation="staccato")
+    p.add("D4", Duration.QUARTER, articulation="legato")
+    p.add("E4", Duration.QUARTER, articulation="marcato")
+    p.add("F4", Duration.QUARTER, articulation="tenuto")
+    p.add("G4", Duration.QUARTER, articulation="accent")
+    p.add("A4", Duration.QUARTER, articulation="fermata")
+    assert len(p.notes) == 6
+    assert p.notes[0].articulation == "staccato"
+    assert p.notes[5].articulation == "fermata"
+
+
+@needs_portaudio
+def test_articulations_render():
+    """Articulations should produce audio without errors."""
+    from pytheory.play import render_score
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="sine", volume=0.3)
+    for art in ["", "staccato", "legato", "marcato", "tenuto", "accent", "fermata"]:
+        p.add("C4", Duration.QUARTER, articulation=art)
+    buf = render_score(score)
+    assert len(buf) > 0
+
+
+# ── Dynamic curves ───────────────────────────────────────────────────────
+
+def test_crescendo_adds_notes():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="sine")
+    p.crescendo(["C4", "D4", "E4", "F4"], Duration.QUARTER,
+                start_vel=40, end_vel=100)
+    assert len(p.notes) == 4
+    assert p.notes[0].velocity == 40
+    assert p.notes[3].velocity == 100
+
+
+def test_decrescendo_adds_notes():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="sine")
+    p.decrescendo(["C4", "D4", "E4", "F4"], Duration.QUARTER,
+                  start_vel=110, end_vel=40)
+    assert len(p.notes) == 4
+    assert p.notes[0].velocity == 110
+    assert p.notes[3].velocity == 40
+
+
+def test_swell_velocity_shape():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="sine")
+    p.swell(["C4", "D4", "E4", "F4", "G4"], Duration.QUARTER,
+            low_vel=30, peak_vel=110)
+    assert len(p.notes) == 5
+    # First and last should be near low_vel
+    assert p.notes[0].velocity == 30
+    assert p.notes[4].velocity == 30
+    # Middle should be at or near peak
+    assert p.notes[2].velocity == 110
+
+
+def test_dynamics_custom_velocities():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="sine")
+    p.dynamics(["C4", "D4", "E4"], Duration.QUARTER,
+               velocities=[50, 100, 75])
+    assert p.notes[0].velocity == 50
+    assert p.notes[1].velocity == 100
+    assert p.notes[2].velocity == 75
+
+
+def test_dynamics_with_articulation():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="sine")
+    p.crescendo(["C4", "D4"], Duration.QUARTER,
+                start_vel=40, end_vel=100, articulation="staccato")
+    assert p.notes[0].articulation == "staccato"
+    assert p.notes[1].articulation == "staccato"
+
+
+# ── Part.hit() ───────────────────────────────────────────────────────────
+
+def test_part_hit_adds_note():
+    from pytheory.rhythm import DrumSound, _DrumTone
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("kit", synth="sine")
+    p.hit(DrumSound.KICK, Duration.QUARTER, velocity=100)
+    p.hit(DrumSound.SNARE, Duration.QUARTER, velocity=90, articulation="accent")
+    assert len(p.notes) == 2
+    assert isinstance(p.notes[0].tone, _DrumTone)
+    assert p.notes[0].tone.sound == DrumSound.KICK
+    assert p.notes[1].articulation == "accent"
+
+
+@needs_portaudio
+def test_part_hit_renders():
+    """Part.hit() drum sounds should render through the note pipeline."""
+    from pytheory.rhythm import DrumSound
+    from pytheory.play import render_score
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("kit", synth="sine", volume=0.5)
+    p.hit(DrumSound.KICK, Duration.QUARTER)
+    p.hit(DrumSound.SNARE, Duration.QUARTER)
+    p.hit(DrumSound.CLOSED_HAT, Duration.QUARTER)
+    p.hit(DrumSound.CRASH, Duration.QUARTER)
+    buf = render_score(score)
+    assert len(buf) > 0
+
+
+# ── Part.ramp() ──────────────────────────────────────────────────────────
+
+def test_ramp_generates_automation():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="saw", lowpass=200)
+    p.ramp(over=4.0, lowpass=8000)
+    # Should have generated automation points
+    assert len(p._automation) > 0
+    # First point should be near 200, last near 8000
+    first_lp = p._automation[0][1].get("lowpass", 0)
+    last_lp = p._automation[-1][1].get("lowpass", 0)
+    assert first_lp < 1000  # near start
+    assert last_lp > 7000  # near target
+
+
+def test_ramp_easing_curves():
+    score = pytheory.Score("4/4", bpm=120)
+    for curve in ["linear", "ease_in", "ease_out", "ease_in_out"]:
+        p = score.part(f"test_{curve}", synth="saw", lowpass=200)
+        p.ramp(over=4.0, curve=curve, lowpass=8000)
+        assert len(p._automation) > 0
+
+
+def test_ramp_multiple_params():
+    score = pytheory.Score("4/4", bpm=120)
+    p = score.part("test", synth="saw", lowpass=200)
+    p.ramp(over=4.0, lowpass=8000, reverb=0.5)
+    # Should have both params in automation points
+    last_point = p._automation[-1][1]
+    assert "lowpass" in last_point
+    assert "reverb_mix" in last_point  # mapped from "reverb"
+
+
+# ── Cross-choke ──────────────────────────────────────────────────────────
+
+def test_djembe_patterns_exist():
+    from pytheory.rhythm import Pattern
+    for name in ["djembe", "kuku", "soli", "dununba", "tiriba",
+                 "yankadi", "djansa", "mendiani"]:
+        p = Pattern.preset(name)
+        assert p.beats > 0
+        assert len(p.hits) > 0
+
+
+def test_djembe_fills_exist():
+    from pytheory.rhythm import Pattern
+    for name in ["djembe call", "djembe roll", "djembe break"]:
+        f = Pattern.fill(name)
+        assert f.beats == 4.0
+        assert len(f.hits) > 0
+
+
+def test_cajon_fills_exist():
+    from pytheory.rhythm import Pattern
+    for name in ["cajon flam", "cajon rumble", "cajon breakdown"]:
+        f = Pattern.fill(name)
+        assert f.beats == 4.0
+        assert len(f.hits) > 0
+
+
+def test_metal_fills_exist():
+    from pytheory.rhythm import Pattern
+    for name in ["metal triplet", "metal blast", "metal cascade"]:
+        f = Pattern.fill(name)
+        assert f.beats == 4.0
+        assert len(f.hits) > 0
+
+
+# ── render_score in __all__ ──────────────────────────────────────────────
+
+def test_render_score_exported():
+    assert "render_score" in pytheory.__all__
@@ -690,7 +690,7 @@ wheels = [

 [[package]]
 name = "pytheory"
-version = "0.39.0"
+version = "0.40.0"
 source = { editable = "." }
 dependencies = [
    { name = "scipy", version = "1.15.3", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.11'" },
Author	SHA1	Message	Date
kennethreitz	b8d1fe5e81	v0.40.0: Rhodes synth, 74 audio demos, improved percussion Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 17:22:43 -04:00
kennethreitz	2612444146	Louder snares in marching demo (volume 1.5 to compensate ensemble/8) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:59:11 -04:00
kennethreitz	48a954d063	Cajón slap: pure wood by default, snare wires optional CAJON_SLAP is now dry wood crack (no wires). New CAJON_SLAP_SNARE has the buzzy version for cajóns with snare wires engaged. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:55:09 -04:00
kennethreitz	8a07be23e6	Cajón bass: fleshy palm impact + thuddy box resonance Added hand-on-wood transient (lowpassed noise for soft palm feel) before the box resonance kicks in. Deeper sub, longer air cavity thump. You hear the hand, then the box. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:53:00 -04:00
kennethreitz	d771117d5c	Full drumline marching demo: 8 snares, 4 quads, 5 basses with ensemble Click count-off → snare groove with quad sweeps and bass splits → flams and diddles → buzz roll into big unison hit. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:51:41 -04:00
kennethreitz	1ae9404f07	Add room reverb to cajón demo Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:50:53 -04:00
kennethreitz	2e5b18de2e	Boxy cajón: box resonance modes, plywood character, hollow mids Bass has 180/320Hz box resonance modes. Slap has wood panel resonance under the wire buzz. Tap has hollow finger-on-plywood. Everything sounds like hitting a wooden box now. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:48:55 -04:00
kennethreitz	248594fb21	Extend metal gallop+triplet section to 4 bars Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:47:22 -04:00
kennethreitz	3ce890c54c	Hall reverb on all tabla demos to match keherwa Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:46:01 -04:00
kennethreitz	499c49b6eb	Metal demo: groove → gallop → blast → double kick with fills Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:44:53 -04:00
kennethreitz	f85504b456	Tabla demos: add bayan pitch bends (ge_bend) to all three examples Teental ends with bayan fill. Keherwa has ge_bend accents throughout plus a bend-heavy final bar. Chakradar preceded by bayan showcase. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:42:04 -04:00
kennethreitz	d0624f8b78	Thunderous dhol dagga: deeper sub, longer sustain, more body Dagga now booms at 30Hz with sustained sub, wider thump band, and heavier stick impact. The kind of hit you feel in your chest. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:40:18 -04:00
kennethreitz	fb37a7c27b	Regenerate all 74 audio samples with choke-free renderer Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:38:44 -04:00
kennethreitz	fb36e75a42	Remove melodic note choke, fix banjo to 16th notes The melodic renderer was choking all signal at each new note, killing strum/hold resonance. Removed — notes now naturally overlap and ring out. Banjo lick now uses 16th notes. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:35:06 -04:00
kennethreitz	81b54d2394	Mandolin demo: tremolo rolls + melody Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:31:39 -04:00
kennethreitz	fa6a3090cb	Banjo demo: strum + bluegrass picking lick Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:31:22 -04:00
kennethreitz	58286ddb69	Bagpipe demo: drone + chanter melody like Highland pipes Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:30:44 -04:00
kennethreitz	6d137be9f5	Accordion demo: waltz chords with held bass Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:29:08 -04:00
kennethreitz	383802a1e1	Timpani: even longer fundamental sustain (0.35/s decay) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:27:59 -04:00
kennethreitz	7f2aeb2395	Timpani: long fundamental sustain for resonance buildup in rolls Fundamental now decays at 0.6/s instead of 1.5/s — rings long enough that rapid roll hits stack into a singing 'oooh' resonance. Upper modes still die fast for the initial thump character. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:27:08 -04:00
kennethreitz	16b4c7d1fa	Faster timpani roll: 140bpm + 32nd notes Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:24:57 -04:00
kennethreitz	b9ee5c9cde	Timpani demo: crescendo roll + accent hit, matches doc example Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:23:21 -04:00
kennethreitz	7375d58209	Lower timpani demo to octave 2-3 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:21:57 -04:00
kennethreitz	6316a6c910	Hybrid harp: KS pluck transient + pure additive sustain Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:20:49 -04:00
kennethreitz	237cfe171c	Rewrite harp synth: pure additive tone instead of Karplus-Strong Clean harmonics with dominant fundamental, gentle upper partials, and soft finger pluck transient. Much purer, singing tone. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:18:50 -04:00
kennethreitz	1751f97617	Update changelog for v0.39.4 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:08:32 -04:00
kennethreitz	943a12b3bb	Add dedicated Rhodes electric piano synth Tine + tonebar + electromagnetic pickup model with bell-like harmonics, metallic attack transient, and pickup nonlinearity. electric_piano instrument preset now uses rhodes_synth instead of FM. FM section updated to show bells. Audio demos for both. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:08:10 -04:00
kennethreitz	04d2de3e70	Add pulse, noise, PWM slow, PWM fast audio demos Every waveform on the synths page now has an audio player. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 16:04:13 -04:00
kennethreitz	ead42751ef	Trim trailing silence from all audio exports Detects silence below -60dB threshold and trims with 0.2s tail for natural decay. 69 audio files regenerated. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 15:59:34 -04:00
kennethreitz	8dee0d00d8	Raw waveform demos (no envelope), open up bass lowpass to 1200 Basic waveforms now play without envelope shaping so you hear the raw timbre. Complete Example bass at 1200 instead of 600. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 15:57:39 -04:00
kennethreitz	de112e0d9f	Idiomatic synth demos: strum, hold, drone, ensemble per instrument Harp: arpeggiated hold. Harpsichord: baroque runs. Guitars: strum chords. Piano: hold + melody. Cello: bowed ensemble=3. Sitar: drone under melody. Banjo/uke: strum. Mandolin: tremolo. Strings: ensemble=8. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:36:30 -04:00
kennethreitz	f469ad90f8	Add granular synth audio demo Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:33:05 -04:00
kennethreitz	bab7f39304	Fix bass guitar demo: play in octave 2-3 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:29:21 -04:00
kennethreitz	62557ba534	Fix upright bass demo: play in octave 2-3 not 4-5 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:28:50 -04:00
kennethreitz	8b50a9c325	Audio demos for every synth: 34 waveform/instrument players Every synth section in the docs now has an audio player. Classic waveforms, FM, supersaw, and all 31 instrument synths each play a C major arpeggio for easy comparison. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:27:56 -04:00
kennethreitz	7e9caac70b	Update homepage + quickstart to rock example, match code to audio Both pages now show the same rock beat example in G major with piano, saw lead, triangle bass. Code and audio are in sync. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:15:27 -04:00
kennethreitz	a0756b3172	v0.39.3: Audio samples in docs, numpy vectorization Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:11:23 -04:00
kennethreitz	e3dd706032	Remove stale sequencing_bossa.wav (replaced by complete_rock.wav) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:05:19 -04:00
kennethreitz	9b412906bc	Fix acid example, add basic chords audio, regenerate all 34 samples All audio files: stereo, normalized, no issues. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 11:04:51 -04:00
kennethreitz	54e0421997	Fix acid legato example: drop pad envelope, add filter + distortion The pad envelope has slow attack — wrong for fast acid lines. Updated both the docs code and the audio generator. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 10:57:47 -04:00
kennethreitz	109343ad30	Replace bossa nova with rock in Complete Example, add arpeggio audio Complete Example now uses rock beat with piano/saw/bass in G major. Added audio player for the arpeggiator code example. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 10:53:06 -04:00
kennethreitz	28e84de566	Add legato/glide audio example to sequencing docs Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 10:50:55 -04:00
kennethreitz	d353d64298	Add Polyphonic Hold section with audio example to sequencing docs Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 10:49:49 -04:00
kennethreitz	7ee02e7ed2	Fix audio samples to stereo WAV save_wav was writing mono — now properly writes stereo from render_score's (n_samples, 2) output. All 31 files regenerated. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 10:48:51 -04:00
kennethreitz	a5c9a46eb2	Add ensemble= to strings, cellos, choir, pads in songs.py String ensembles: 6-10 players. Cellos: 3 players. Choir: 6 voices. Cathedral siren pad: 4 voices. Makes everything sound fuller and more alive. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 10:39:51 -04:00
kennethreitz	f9c63ec360	Add audio player to homepage, remove save_midi from example Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 10:37:18 -04:00
kennethreitz	b9e88b77d8	Add audio for all world percussion, metal, cajón sections 28 audio samples total. Tabla (teental, keherwa, chakradar at fast tempos), dhol, dholak, mridangam, metal blast, cajón. No labels on stacked players. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 06:04:30 -04:00
kennethreitz	1910b09132	Add individual audio samples for all 4 Playing Patterns examples Rock, bossa nova, salsa, and afrobeat each get their own audio player. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 05:55:11 -04:00
kennethreitz	0c5287450b	Merge pull request #48 from kennethreitz/docs-audio Audio samples in documentation	2026-03-29 05:51:38 -04:00
kennethreitz	5ac1873d83	Audio samples for all play_score() examples in docs 20 WAV files covering quickstart, sequencing, drums, playback, and cookbook examples. Audio players embedded after every code block that calls play_score(). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 05:51:25 -04:00
kennethreitz	9fafca2b08	Add audio samples for documentation - docs/generate_audio.py renders 12 code examples as WAV files - Audio players embedded in sequencing and drums docs via raw HTML - Covers: piano hold, articulations, dynamics, filter ramp, rock, bossa nova, djembe, tabla, marching snare, ensemble, strum, swell - WAV files gitignored — generated at build time Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 05:42:34 -04:00
kennethreitz	af044f68ca	Numpy vectorization: cached helpers, vectorized piano harmonics - Cache time arrays and exp_decay envelopes (avoid reallocation) - Cache drum hit renders (same sound at same length = same output) - Vectorize piano_wave harmonic synthesis: 30 sin() calls in a Python loop → one 2D numpy.sin() operation Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-29 05:25:52 -04:00
kennethreitz	60f697f846	Add song #33 : Ensemble Showcase Acid bass (ensemble=3), 16-player strings, tabla with solo and tihai, 8-player snare line, 6-player lead synth. Showcases ensemble, ramp, LFO, sidechain, articulations, and dynamic curves. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 23:07:23 -04:00
kennethreitz	7d678e364e	v0.39.2: Marching drumline, ensemble rendering, rudiments Full marching percussion: snare, quads, pitched bass drums. Part.flam(), Part.diddle(), Part.cheese() rudiment methods. Part ensemble= for multi-player rendering with timing tendencies. Sympathetic snare resonance. Updated docs. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 23:01:18 -04:00
kennethreitz	3a8d829010	Quads, pitched bass drums, full drumline cadence - 5 quad/tenor drum sounds (4 pitched + spock rim) - 5 pitched marching bass drums (high to low, more beater sound) - 6 patterns: quad sweep, quad groove, bass split, bass unison, drumline - Louder snares, more beater on bass drums - Song #32 rewritten as full drumline cadence with ensemble (8 snares, 4 quads, 5 basses) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 22:59:08 -04:00
kennethreitz	2a67906937	Update changelog for v0.40.0 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 22:49:57 -04:00
kennethreitz	b9dcad0454	Marching snare, ensemble, flam/diddle/cheese, resonance buildup - 3 marching percussion sounds: snare, rimshot, stick click - 4 marching patterns: march, cadence, paradiddle, roll - Part.flam(), Part.diddle(), Part.cheese() rudiment methods - Part ensemble= parameter: duplicate voices with per-player timing tendencies and micro pitch drift (works on any Part) - Sympathetic resonance: marching snare buzz builds up with repeated hits - Song #32: Snare Cadence (16 bars with triplets, 32nds, flams, cheese) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 22:48:37 -04:00
kennethreitz	db9726168a	Add chakradar tabla pattern, simplify sprunki.py 16-beat chakradar: tihai of tihais with 3 escalating phrases and crescendo triplet finale landing on sam. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 21:22:34 -04:00
kennethreitz	26af923789	Simplify sprunki.py to clean melody reference Just the notes transcribed from MIDI, no arrangement. Base for future iterations. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 21:18:40 -04:00
kennethreitz	72e18a9bec	Add Sprunki Simon Phase 1 arrangement (examples/sprunki.py) Full arrangement with three-octave square wave lead, drums, bass, supersaw pads, and a saw solo section. Melody transcribed from MIDI. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 18:39:46 -04:00
kennethreitz	7d56ed7a2c	Add render_score to __all__, 19 tests for new features Tests for articulations, dynamic curves, Part.hit(), Part.ramp(), djembe/cajón/metal patterns and fills. 882 tests total. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-03-28 18:08:03 -04:00