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>

CHANGELOG.md

@@ -2,6 +2,88 @@
 
 All notable changes to PyTheory are documented here.
 
+## 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,
+  reducing supply chain surface (#47)
+- **`Part.ramp()`** — smooth parameter automation with 4 interpolation
+  curves (linear, ease_in, ease_out, ease_in_out)
+- **Articulations** — staccato, legato, marcato, tenuto, accent, fermata
+- **Dynamic curves** — crescendo(), decrescendo(), swell(), dynamics()
+- **`Part.hit()`** — individual drum sounds with articulation support
+- **Cross-choke drum damping** — djembe, hi-hats, cajón, doumbek
+- **5 new djembe patterns** + 3 djembe fills (30 fills total)
+- **6 new drum fills** — 3 cajón, 3 metal
+- **Duration arithmetic** — multiply, divide, add
+- **Improved djembe slap** synthesis
+- Song #31: Acid Tabla
+
+## 0.38.2
+
+- **`Part.ramp()`** — smooth parameter automation from current value to
+  target over a duration. Works for lowpass, reverb, distortion, chorus,
+  delay, volume, and any `.set()` parameter. Four interpolation curves:
+  linear, ease_in, ease_out, ease_in_out.
+
+## 0.38.1
+
+- **Dynamic curves** — `Part.crescendo()`, `Part.decrescendo()`,
+  `Part.swell()`, and `Part.dynamics()` for velocity ramps and custom
+  curves across a sequence of notes
+
+## 0.38.0
+
+- **Articulations** — `staccato`, `legato`, `marcato`, `tenuto`, `accent`,
+  `fermata` via `articulation=` on `Part.add()` and `Part.hold()`
+- **`Part.hit()`** — place individual drum sounds in a Part's note stream
+  with articulation, velocity, and effects support
+- **5 new djembe patterns** — dununba, tiriba, yankadi, djansa, mendiani
+- **3 new djembe fills** — djembe call, djembe roll, djembe break (30 fills total)
+- **Cross-choke drum damping** — striking one sound fades out related sounds
+  (djembe, hi-hats, cajón, doumbek)
+- **Improved djembe slap** — dry goatskin pop instead of snare-like noise
+
+## 0.37.0
+
+- **5 new djembe patterns** — dununba, tiriba, yankadi, djansa, mendiani
+- **3 new djembe fills** — djembe call, djembe roll, djembe break (30 fills total)
+- **Cross-choke drum damping** — striking one sound on a hand drum fades
+  out the ring of related sounds (djembe slap kills bass resonance, closed
+  hat chokes open hat, cajón slap dampens bass, doumbek tek dampens dum)
+- **Improved djembe slap** — dry, high-pitched goatskin pop instead of
+  snare-like noise rattle
+
+## 0.36.6
+
+- **6 new drum fills** — 3 cajón (flam, rumble, breakdown) and 3 metal
+  (triplet, blast, cascade). 27 fills total.
+- Updated drums documentation with fill lists and examples
+
+## 0.36.5
+
+- **Duration arithmetic** — `Duration.WHOLE * 2`, `Duration.HALF + Duration.QUARTER`,
+  division, and reverse multiply all work now (previously raised TypeError)
+
 ## 0.36.3
 
 - **`Part.hold()`** — polyphonic overlap on a single part. Add notes

docs/guide/drums.rst

@@ -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, 80+ pattern presets across dozens of genres, and 21 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
 --------------
 
@@ -252,14 +260,17 @@ ending and a new one is about to begin. Without fills, a drum pattern
 just loops. With them, it breathes and has structure.
 
 ``Pattern.fill()`` loads a 1-bar drum fill -- a short break that
-transitions between sections. 21 fill presets are available:
+transitions between sections. 30 fill presets are available:
 
 .. code-block:: pycon
 
    >>> Pattern.list_fills()
    ['afrobeat', 'blast', 'bossa nova', 'breakdown', 'buildup',
-    'cumbia', 'disco', 'funk', 'highlife', 'hip hop', 'house',
-    'jazz', 'jazz brush', 'metal', 'reggae', 'rock', 'rock crash',
+    'cajon breakdown', 'cajon flam', 'cajon rumble',
+    'cumbia', 'disco', 'djembe break', 'djembe call', 'djembe roll',
+    'funk', 'highlife', 'hip hop', 'house',
+    'jazz', 'jazz brush', 'metal', 'metal blast', 'metal cascade',
+    'metal triplet', 'reggae', 'rock', 'rock crash',
     'salsa', 'samba', 'second line', 'trap']
 
    >>> fill = Pattern.fill("rock")
@@ -433,14 +444,19 @@ central to the drum ensemble traditions of Mali, Guinea, and Senegal.
 **3 sounds** -- bass (open center strike), tone (edge strike), and
 slap (sharp edge strike).
 
-**3 patterns:** djembe (a basic accompanying rhythm), kuku (a
-traditional rhythm from Guinea associated with fishing), and soli (a
-solo/celebration rhythm).
+**8 patterns:** djembe (basic accompanying rhythm), kuku (Guinean harvest
+dance), soli (powerful Mandinka rhythm), dununba (heavy bass-driven),
+tiriba (joyful Susu rhythm), yankadi (gentle greeting/welcome), djansa
+(fast Malinke dance), mendiani (women's celebratory dance).
+
+**3 fills:** djembe call (bass-tone-slap conversation building to climax),
+djembe roll (rapid slaps accelerating into bass), djembe break (syncopated
+West African-style break).
 
 .. code-block:: python
 
    score = Score("4/4", bpm=120)
-   score.drums("djembe", repeats=4)
+   score.drums("djembe", repeats=8, fill="djembe call", fill_every=4)
 
 Metal Kit
 ~~~~~~~~~
@@ -456,10 +472,15 @@ metal blast (blast beat with china cymbal accents), metal groove (a
 half-time groove with double kick fills), and metal gallop (the
 classic triplet-feel gallop rhythm).
 
+**4 fills:** metal (double kick 16ths with descending toms), metal triplet
+(double kick triplets with snare accents), metal blast (alternating
+snare/kick 32nds into half-time crash), metal cascade (descending snare
+roll → kick roll → alternating → crash ending).
+
 .. code-block:: python
 
    score = Score("4/4", bpm=200)
-   score.drums("metal blast", repeats=4)
+   score.drums("metal blast", repeats=8, fill="metal cascade", fill_every=4)
 
 Cajón
 ~~~~~
@@ -468,15 +489,68 @@ The cajón is a box-shaped percussion instrument from Peru, now
 ubiquitous in acoustic and unplugged settings worldwide. Players sit
 on the box and strike the front face with their hands.
 
-**2 sounds** -- slap (sharp, snare-like) and tap (bass-like).
+**3 sounds** -- bass (deep center thump), slap (sharp, snare-like edge
+hit with wire buzz), and tap (light finger tap).
 
 **3 patterns:** cajon (basic groove), cajon rumba (flamenco-style rumba),
 and cajon folk (folk/acoustic pattern).
 
+**3 fills:** cajon flam (slaps accelerating into bass hits), cajon rumble
+(fast taps building to slap accents), cajon breakdown (syncopated
+bass-slap groove).
+
 .. code-block:: python
 
    score = Score("4/4", bpm=100)
-   score.drums("cajon", repeats=4)
+   score.drums("cajon", repeats=8, fill="cajon flam", fill_every=4)
+
+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)
+
+**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
 -----------

docs/guide/sequencing.rst

@@ -47,6 +47,18 @@ A ``Duration`` represents a note length in beats (quarter note = 1 beat):
    >>> Duration.TRIPLET_QUARTER.value
    0.6666666666666666
 
+Duration supports arithmetic — multiply, divide, and add to create
+compound durations:
+
+.. code-block:: pycon
+
+   >>> Duration.WHOLE * 2
+   8.0
+   >>> Duration.HALF + Duration.QUARTER
+   3.0
+   >>> Duration.WHOLE / 2
+   2.0
+
 Time Signatures
 ---------------
 
@@ -399,6 +411,143 @@ The arpeggiator also accepts velocity:
 
    lead.arpeggio("Am", bars=2, pattern="up", velocity=80)
 
+Articulations
+-------------
+
+Articulations change *how* a note is played — its attack, duration, and
+weight. A staccato note is short and bouncy. A marcato note hits hard.
+A legato note melts into the next one. This is the difference between
+a melody that sounds like a MIDI file and one that sounds like a
+musician played it.
+
+Pass ``articulation=`` to ``Part.add()``:
+
+.. code-block:: python
+
+   piano.add("C4", Duration.QUARTER, articulation="staccato")   # short, bouncy
+   piano.add("D4", Duration.QUARTER, articulation="legato")     # smooth, overlaps
+   piano.add("E4", Duration.QUARTER, articulation="marcato")    # heavy accent
+   piano.add("F4", Duration.QUARTER, articulation="tenuto")     # held, soft attack
+   piano.add("G4", Duration.QUARTER, articulation="accent")     # louder
+   piano.add("C5", Duration.HALF, articulation="fermata")       # held longer
+
+What each articulation does:
+
+- **staccato** — plays ~40% of the note duration with a quick fade-out. Short and detached.
+- **legato** — extends ~15% into the next note. Smooth and connected.
+- **marcato** — 25% velocity boost + sharper attack. Heavy and accented.
+- **tenuto** — full duration with a softer attack ramp. Held and deliberate.
+- **accent** — 20% velocity boost, no duration change.
+- **fermata** — stretches the note 50% longer.
+
+Articulations work on ``Part.hold()`` and ``Part.hit()`` too.
+
+Dynamic Curves
+--------------
+
+Real music breathes — phrases get louder, get quieter, swell and
+recede. Dynamic curves let you shape the velocity across a sequence
+of notes instead of setting each one manually.
+
+.. code-block:: python
+
+   # Crescendo: quiet to loud
+   piano.crescendo(["C4","D4","E4","F4","G4","A4","B4","C5"],
+                   Duration.QUARTER, start_vel=30, end_vel=110)
+
+   # Decrescendo: loud to quiet
+   piano.decrescendo(["C5","B4","A4","G4","F4","E4","D4","C4"],
+                     Duration.QUARTER, start_vel=110, end_vel=30)
+
+   # Swell: up then back down (orchestral < > shape)
+   strings.swell(["C4","D4","E4","F4","G4","F4","E4","D4"],
+                 Duration.QUARTER, low_vel=35, peak_vel=110)
+
+   # Custom curve: explicit velocity per note
+   piano.dynamics(["C4","E4","G4","C5"], Duration.QUARTER,
+                  velocities=[50, 80, 110, 90])
+
+Four methods:
+
+- **crescendo()** — linear velocity ramp from ``start_vel`` to ``end_vel``.
+- **decrescendo()** — same thing, but typically loud to quiet.
+- **swell()** — ramps up to the midpoint, then back down. The classic
+  orchestral crescendo-decrescendo.
+- **dynamics()** — the general form. Pass a ``(start, end)`` tuple for
+  a linear ramp, or a list of velocities for a custom curve.
+
+All four accept ``articulation=`` to combine dynamics with articulations:
+
+.. code-block:: python
+
+   # Staccato crescendo — bouncy notes getting louder
+   piano.crescendo(["C4","E4","G4","C5","E5","G5","C6","E6"],
+                   Duration.EIGHTH, start_vel=40, end_vel=110,
+                   articulation="staccato")
+
+Part.hit() — Manual Drum Placement
+-----------------------------------
+
+The pattern system is great for grooves, but sometimes you want to
+place individual drum hits with full control — articulations, effects,
+and all. ``Part.hit()`` puts a drum sound into a Part's note stream:
+
+.. code-block:: python
+
+   from pytheory import DrumSound
+
+   kit = score.part("kit", synth="sine", volume=0.7)
+
+   kit.hit(DrumSound.KICK, Duration.QUARTER, articulation="accent")
+   kit.hit(DrumSound.CLOSED_HAT, Duration.EIGHTH, velocity=60)
+   kit.hit(DrumSound.SNARE, Duration.EIGHTH, articulation="marcato")
+
+Because hits go through the normal Part renderer, they get humanize,
+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.
+
 Swing and Groove
 ----------------
 
@@ -478,6 +627,50 @@ integrate naturally with the rest of the automation system:
    pad.rest(Duration.WHOLE)
    pad.rest(Duration.WHOLE)
 
+Parameter Ramps
+---------------
+
+Fades only control volume. ``Part.ramp()`` smoothly sweeps *any*
+parameter from its current value to a target — filters, reverb,
+distortion, chorus, delay, anything ``.set()`` accepts. This is how
+you build filter sweeps, gradual effect sends, and EDM buildups.
+
+.. code-block:: python
+
+   lead = score.part("lead", synth="saw", lowpass=200, lowpass_q=3.0)
+
+   # Open the filter over 8 bars
+   lead.ramp(over=Duration.WHOLE * 8, lowpass=8000)
+
+   # Ramp multiple params at once
+   pad.ramp(over=Duration.WHOLE * 4, reverb=0.5, chorus=0.3)
+
+   # Close the filter with distortion fading in
+   lead.ramp(over=Duration.WHOLE * 4, lowpass=400, distortion=0.5)
+
+Four interpolation curves:
+
+- **linear** — constant rate of change (default).
+- **ease_in** — starts slow, accelerates. Good for buildups.
+- **ease_out** — starts fast, decelerates. Good for releases.
+- **ease_in_out** — slow at both ends. Smooth and natural.
+
+.. code-block:: python
+
+   # EDM buildup: slow start, accelerating filter sweep
+   lead.ramp(over=Duration.WHOLE * 8, curve="ease_in", lowpass=8000)
+
+   # Smooth reverb wash fading in and settling
+   pad.ramp(over=Duration.WHOLE * 4, curve="ease_in_out", reverb=0.6)
+
+``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).
+
+Combine with ``lfo()`` for cyclic modulation and ``ramp()`` for
+one-shot sweeps — together they cover the full range of parameter
+automation.
+
 Humanize
 --------
 

examples/songs.py

@@ -2324,6 +2324,486 @@ def sitar_drone():
     play_song(score, "Sitar Drone — Raga Bhairav (22-Shruti JI, hold() polyphony)")
 
 
+def acid_tabla():
+    """Acid Tabla — 303 filter automation meets Indian percussion."""
+    score = Score("4/4", bpm=132)
+
+    # ── House drums ──
+    score.drums("house", repeats=20, fill="house", fill_every=8)
+    score.set_drum_effects(volume=0.45)
+
+    # ── 303 acid bass ──
+    acid = score.part("acid", synth="saw", volume=0.75,
+                      legato=True, glide=0.035,
+                      distortion=0.35, distortion_drive=4.5,
+                      saturation=0.15, humanize=0.05)
+
+    # Intro (4 bars): filter closed, high resonance
+    acid.set(lowpass=600, lowpass_q=12.0)
+    for _ in range(4):
+        for n in ["C3","C3","C2","C3","Eb3","C2","G2","C3"]:
+            acid.add(n, Duration.EIGHTH)
+
+    # Build (4 bars): filter opens
+    acid.ramp(over=Duration.WHOLE * 4, curve="ease_in", lowpass=4500)
+    for _ in range(4):
+        for n in ["C2","G2","C3","Eb3","C2","Bb2","G2","C3"]:
+            acid.add(n, Duration.EIGHTH)
+
+    # Peak (4 bars): wide open, wilder pattern
+    acid.set(lowpass=7000, lowpass_q=7.0)
+    for _ in range(2):
+        for n in ["C2","C3","Eb3","G3","C2","Bb2","G2","Eb3"]:
+            acid.add(n, Duration.EIGHTH)
+    for _ in range(2):
+        for n in ["C2","Eb3","C3","G3","Bb2","C3","G2","C2"]:
+            acid.add(n, Duration.EIGHTH)
+
+    # Tabla section (4 bars): filter pulls back
+    acid.set(lowpass=3000, lowpass_q=5.0)
+    for _ in range(4):
+        for n in ["C2","G2","C3","C2","Eb2","G2","Bb2","C2"]:
+            acid.add(n, Duration.EIGHTH)
+
+    # Outro (4 bars): filter closes
+    acid.ramp(over=Duration.WHOLE * 4, curve="ease_out", lowpass=400, lowpass_q=15.0)
+    for _ in range(4):
+        for n in ["C3","G2","C2","C3","C2","G2","Eb2","C2"]:
+            acid.add(n, Duration.EIGHTH)
+
+    # ── Tabla: enters bar 9, rides through to the end ──
+    tabla = score.part("tabla", synth="sine", volume=0.55, reverb=0.15)
+
+    # 8 bars rest
+    for _ in range(64):
+        tabla.rest(Duration.EIGHTH)
+
+    # Bars 9-12: keherwa groove
+    for _ in range(4):
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=100, articulation="accent")
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=55)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=50)
+        tabla.hit(DrumSound.TABLA_NA, Duration.EIGHTH, velocity=88)
+        tabla.hit(DrumSound.TABLA_TIN, Duration.EIGHTH, velocity=82)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.EIGHTH, velocity=52)
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=95, articulation="accent")
+        tabla.hit(DrumSound.TABLA_GE, Duration.EIGHTH, velocity=78)
+
+    # Bars 13-14: busier with 16ths
+    for _ in range(2):
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=105, articulation="marcato")
+        tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=48)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=52)
+        tabla.hit(DrumSound.TABLA_NA, Duration.EIGHTH, velocity=90)
+        tabla.hit(DrumSound.TABLA_TIN, Duration.EIGHTH, velocity=85)
+        tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=48)
+        tabla.hit(DrumSound.TABLA_NA, Duration.SIXTEENTH, velocity=58)
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=100, articulation="accent")
+        tabla.hit(DrumSound.TABLA_GE_BEND, Duration.EIGHTH, velocity=88)
+
+    # Bars 15-16: tihai crescendo ending
+    for vel in [85, 90, 95]:
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=vel, articulation="accent")
+        tabla.hit(DrumSound.TABLA_TIT, Duration.SIXTEENTH, velocity=int(vel * 0.6))
+        tabla.hit(DrumSound.TABLA_NA, Duration.SIXTEENTH, velocity=int(vel * 0.75))
+    for vel in [100, 105, 110]:
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=vel, articulation="marcato")
+        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=127, articulation="fermata")
+    tabla.hit(DrumSound.TABLA_GE_BEND, Duration.QUARTER, velocity=110)
+    tabla.rest(Duration.HALF)
+
+    # Bars 17-20: tabla continues through outro, lighter
+    for _ in range(4):
+        tabla.hit(DrumSound.TABLA_DHA, Duration.EIGHTH, velocity=85, 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)
+
+    # ── Pad: enters at peak, fades during outro ──
+    pad = score.part("pad", synth="supersaw", envelope="pad", volume=0.0,
+                     reverb=0.4, chorus=0.2, detune=10, lowpass=2500)
+    for _ in range(32):
+        pad.rest(Duration.QUARTER)
+    pad.ramp(over=Duration.WHOLE * 2, volume=0.18)
+    for sym in ["Cm", "Ab", "Eb", "Bb"] * 3:
+        pad.add(Chord.from_symbol(sym), Duration.WHOLE)
+    pad.ramp(over=Duration.WHOLE * 2, curve="ease_out", volume=0.0)
+    for sym in ["Cm", "Cm"]:
+        pad.add(Chord.from_symbol(sym), Duration.WHOLE)
+
+    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)")
+
+
 SONGS = {
     "1": ("Bossa Nova in A minor", bossa_nova_girl),
     "2": ("Bebop in Bb major", bebop_in_bb),
@@ -2355,6 +2835,8 @@ SONGS = {
     "28": ("Descent (Generative — different every time)", descent),
     "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),
 }
 
 if __name__ == "__main__":
@@ -2368,7 +2850,7 @@ if __name__ == "__main__":
             print(f"    {key:>2}. {name}")
 
         print()
-        choice = input("  Pick a song (1-30, or 'all'): ").strip()
+        choice = input("  Pick a song (1-32, or 'all'): ").strip()
         print()
 
         if choice == "all":

examples/sprunki.py

@@ -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()

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "pytheory"
-version = "0.36.4"
+version = "0.39.2"
 description = "Music Theory for Humans"
 readme = "README.md"
 license = "MIT"
@@ -21,7 +21,6 @@ classifiers = [
     "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
-    "numeral",
     "sounddevice",
     "scipy",
 ]

pytheory/__init__.py

@@ -1,6 +1,6 @@
 """PyTheory: Music Theory for Humans."""
 
-__version__ = "0.36.4"
+__version__ = "0.39.2"
 
 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",
 ]

pytheory/_statics.py

@@ -2,6 +2,43 @@ import math
 
 REFERENCE_A = 440
 
+# ── Roman numeral helpers (replaces `numeral` package) ───────────────────
+
+_ROMAN_MAP = [
+    (1000, "M"), (900, "CM"), (500, "D"), (400, "CD"),
+    (100, "C"), (90, "XC"), (50, "L"), (40, "XL"),
+    (10, "X"), (9, "IX"), (5, "V"), (4, "IV"), (1, "I"),
+]
+
+_ROMAN_VALUES = {
+    "I": 1, "V": 5, "X": 10, "L": 50, "C": 100, "D": 500, "M": 1000,
+}
+
+
+def int2roman(n: int) -> str:
+    """Convert an integer to an uppercase Roman numeral string."""
+    result = []
+    for value, numeral in _ROMAN_MAP:
+        while n >= value:
+            result.append(numeral)
+            n -= value
+    return "".join(result)
+
+
+def roman2int(s: str) -> int:
+    """Convert a Roman numeral string (case-insensitive) to an integer."""
+    s = s.upper()
+    total = 0
+    prev = 0
+    for ch in reversed(s):
+        val = _ROMAN_VALUES.get(ch, 0)
+        if val < prev:
+            total -= val
+        else:
+            total += val
+        prev = val
+    return total
+
 # Index of C in the Western tone list (A=0, A#=1, B=2, C=3, ...).
 # Scientific pitch notation changes octave at C, not A, so this offset
 # is needed for all octave arithmetic.

pytheory/chords.py

@@ -849,7 +849,7 @@ class Chord:
             >>> Chord([D4, F4, A4]).analyze("C")
             'ii'
         """
-        import numeral as numeral_mod
+        from ._statics import int2roman
         from .scales import TonedScale
         from .systems import SYSTEMS
         from .tones import Tone
@@ -874,7 +874,7 @@ class Chord:
         scale_names = [t.name for t in scale.tones[:-1]]
 
         def _build_numeral(root, quality, degree_idx, prefix=""):
-            numeral_str = numeral_mod.int2roman(degree_idx + 1, only_ascii=True)
+            numeral_str = int2roman(degree_idx + 1)
             suffix = ""
             if "minor" in quality:
                 numeral_str = numeral_str.lower()

pytheory/play.py

@@ -2796,6 +2796,151 @@ 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.
 
@@ -2890,29 +3035,27 @@ def _synth_djembe_tone(n_samples):
 def _synth_djembe_slap(n_samples):
     """Djembe slap — edge strike with fingers spread, sharp crack.
 
-    The highest, sharpest djembe sound. Fingers fan out on contact
-    creating a loud crack with minimal sustain.
+    The highest, sharpest djembe sound. A dry, high-pitched pop from
+    goatskin membrane — NOT a snare. Tight attack, very short decay,
+    skin character rather than wire rattle.
     """
     t = numpy.arange(n_samples, dtype=numpy.float32) / SAMPLE_RATE
-    # Sharp crack — mostly noise
-    crack_len = min(int(SAMPLE_RATE * 0.02), n_samples)
-    crack = _noise(crack_len) * _exp_decay(crack_len, 100) * 1.0
-    # Brief high-pitched ring
-    ring = numpy.sin(2 * numpy.pi * 600 * t) * _exp_decay(n_samples, 25) * 0.4
-    ring2 = numpy.sin(2 * numpy.pi * 1200 * t) * 0.2 * _exp_decay(n_samples, 35)
-    # Brief membrane pop
-    thump_len = min(int(SAMPLE_RATE * 0.02), n_samples)
-    thump_raw = _noise(thump_len)
-    if thump_len > 20:
-        bl, al = scipy.signal.butter(2, [300, 2000], btype='band', fs=SAMPLE_RATE)
-        thump = scipy.signal.lfilter(bl, al, numpy.pad(thump_raw, (0, max(0, n_samples - thump_len))))[:thump_len]
+    # High membrane pop — goatskin resonance, much higher than snare
+    pop = numpy.sin(2 * numpy.pi * 900 * t) * _exp_decay(n_samples, 50) * 0.5
+    pop2 = numpy.sin(2 * numpy.pi * 1600 * t) * _exp_decay(n_samples, 60) * 0.25
+    pop3 = numpy.sin(2 * numpy.pi * 2400 * t) * _exp_decay(n_samples, 80) * 0.12
+    # Very short filtered click — hand-on-skin transient, not noise rattle
+    click_len = min(int(SAMPLE_RATE * 0.008), n_samples)
+    click_raw = _noise(click_len)
+    if click_len > 20:
+        bl, al = scipy.signal.butter(2, 1800 / (SAMPLE_RATE / 2), btype='high')
+        click = scipy.signal.lfilter(bl, al, numpy.pad(click_raw, (0, max(0, n_samples - click_len))))[:click_len]
     else:
-        thump = thump_raw
-    thump *= _exp_decay(thump_len, 80) * 0.8
-    result = ring + ring2
-    result[:crack_len] += crack
-    result[:thump_len] += thump
-    return numpy.tanh(result * 1.7)
+        click = click_raw
+    click *= _exp_decay(click_len, 150) * 0.6
+    result = pop + pop2 + pop3
+    result[:click_len] += click
+    return numpy.tanh(result * 1.5)
 
 
 def _synth_guiro(n_samples):
@@ -3014,6 +3157,22 @@ def _render_drum_hit(sound_value, n_samples):
         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))
@@ -4147,10 +4306,48 @@ def _render_notes_to_buf(notes, buf, samples_per_beat, total_samples,
                 start += _rnd.randint(-max_offset, max_offset)
                 start = max(0, start)
             dur_ms = note.beats * 60_000 / bpm
+            # Articulation: adjust duration and velocity
+            art = getattr(note, 'articulation', '')
+            art_vel_mult = 1.0
+            art_attack_mult = 1.0  # multiplier for envelope attack
+            if art == 'staccato':
+                dur_ms *= 0.4  # short and bouncy
+            elif art == 'legato':
+                dur_ms *= 1.15  # slight overlap into next note
+            elif art == 'marcato':
+                art_vel_mult = 1.25  # heavier
+                art_attack_mult = 0.3  # sharper attack
+            elif art == 'tenuto':
+                art_attack_mult = 1.8  # softer attack, full duration
+            elif art == 'accent':
+                art_vel_mult = 1.2
+            elif art == 'fermata':
+                dur_ms *= 1.5  # held longer
             n_samples = int(SAMPLE_RATE * dur_ms / 1000)
             if start + n_samples > total_samples:
                 n_samples = total_samples - start
             if n_samples > 0 and start >= 0:
+                # Drum hit via Part.hit() — use drum synth directly
+                from .rhythm import _DrumTone
+                if isinstance(note.tone, _DrumTone):
+                    drum_wave = _render_drum_hit(note.tone.sound.value, n_samples)
+                    mixed = drum_wave.astype(numpy.float32)
+                    # Staccato fade-out for drums
+                    if art == 'staccato':
+                        fade_len = min(int(SAMPLE_RATE * 0.01), len(mixed))
+                        if fade_len > 0:
+                            mixed[-fade_len:] *= numpy.linspace(1.0, 0.0, fade_len).astype(numpy.float32)
+                    vel = getattr(note, 'velocity', 100)
+                    vel = min(127, int(vel * art_vel_mult))
+                    if humanize > 0.0:
+                        vel_jitter = int(humanize * 15)
+                        vel = max(1, min(127, vel + _rnd.randint(-vel_jitter, vel_jitter)))
+                    vel_scale = vel / 127.0
+                    end = min(start + len(mixed), total_samples)
+                    buf[start:end] += mixed[:end - start] * volume * vel_scale
+                    if not getattr(note, '_hold', False):
+                        beat_pos += note.beats
+                    continue
                 # Get pitches
                 if hasattr(note.tone, 'tones'):
                     pitches = [t.pitch(temperament=temperament, reference_pitch=reference_pitch) for t in note.tone.tones]
@@ -4251,11 +4448,18 @@ def _render_notes_to_buf(notes, buf, samples_per_beat, total_samples,
                 if noise_mix > 0:
                     noise = numpy.random.uniform(-1, 1, n_samples).astype(numpy.float32)
                     mixed = mixed * (1.0 - noise_mix * 0.5) + noise * noise_mix * 0.5
-                # Amplitude envelope
-                if a > 0 or d > 0 or s < 1.0 or r > 0:
-                    mixed = _apply_envelope(mixed, a, d, s, r)
-                # Per-note velocity
+                # Amplitude envelope (articulation may adjust attack)
+                art_a = a * art_attack_mult
+                if art_a > 0 or d > 0 or s < 1.0 or r > 0:
+                    mixed = _apply_envelope(mixed, art_a, d, s, r)
+                # Staccato: apply a quick fade-out at the end
+                if art == 'staccato':
+                    fade_len = min(int(SAMPLE_RATE * 0.01), len(mixed))
+                    if fade_len > 0:
+                        mixed[-fade_len:] *= numpy.linspace(1.0, 0.0, fade_len).astype(numpy.float32)
+                # Per-note velocity (articulation may boost)
                 vel = getattr(note, 'velocity', 100)
+                vel = min(127, int(vel * art_vel_mult))
                 if humanize > 0.0:
                     vel_jitter = int(humanize * 15)
                     vel = max(1, min(127, vel + _rnd.randint(-vel_jitter, vel_jitter)))
@@ -4453,35 +4657,71 @@ 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()
@@ -4614,6 +4854,22 @@ def render_score(score):
         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.)
@@ -4629,6 +4885,7 @@ 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
@@ -4661,6 +4918,35 @@ def render_score(score):
                         part_stereo[fade_start:start, ch] *= fade
             _last_hit_start[sound_id] = start
 
+            # Cross-choke: a new hit on one sound dampens the ring of
+            # related sounds on the same instrument (e.g. djembe slap
+            # kills the bass resonance, closed hat kills open hat).
+            _CHOKE_GROUPS = {
+                # Djembe — any strike dampens the others
+                DrumSound.DJEMBE_BASS.value: (DrumSound.DJEMBE_TONE.value, DrumSound.DJEMBE_SLAP.value),
+                DrumSound.DJEMBE_TONE.value: (DrumSound.DJEMBE_BASS.value, DrumSound.DJEMBE_SLAP.value),
+                DrumSound.DJEMBE_SLAP.value: (DrumSound.DJEMBE_BASS.value, DrumSound.DJEMBE_TONE.value),
+                # Hi-hats — closed chokes open
+                DrumSound.CLOSED_HAT.value: (DrumSound.OPEN_HAT.value,),
+                DrumSound.PEDAL_HAT.value: (DrumSound.OPEN_HAT.value,),
+                # Cajón — slap dampens bass ring
+                DrumSound.CAJON_SLAP.value: (DrumSound.CAJON_BASS.value,),
+                DrumSound.CAJON_TAP.value: (DrumSound.CAJON_BASS.value,),
+                # Doumbek — tek/ka dampen dum
+                DrumSound.DOUMBEK_TEK.value: (DrumSound.DOUMBEK_DUM.value,),
+                DrumSound.DOUMBEK_KA.value: (DrumSound.DOUMBEK_DUM.value,),
+            }
+            choke_targets = _CHOKE_GROUPS.get(sound_id, ())
+            for target_id in choke_targets:
+                if target_id in _last_hit_start:
+                    prev_start = _last_hit_start[target_id]
+                    fade_len = min(int(SAMPLE_RATE * 0.004), max(0, start - prev_start))
+                    if fade_len > 0 and start > 0:
+                        fade = numpy.linspace(1.0, 0.0, fade_len).astype(numpy.float32)
+                        fade_start = max(0, start - fade_len)
+                        for ch in range(2):
+                            part_stereo[fade_start:start, ch] *= fade
+
             remaining = total_samples - start
             hit_len = min(int(SAMPLE_RATE * 0.5), remaining)
             wave = _render_drum_hit(hit.sound.value, hit_len)
@@ -4669,6 +4955,39 @@ def render_score(score):
                 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:

pytheory/rhythm.py

@@ -388,6 +388,24 @@ class Duration(Enum):
     DOTTED_QUARTER = 1.5
     TRIPLET_QUARTER = 2 / 3
 
+    # Arithmetic — lets you write ``Duration.WHOLE * 2`` → 8.0 beats.
+    def __mul__(self, other):
+        return self.value * other
+
+    def __rmul__(self, other):
+        return self.value * other
+
+    def __truediv__(self, other):
+        return self.value / other
+
+    def __add__(self, other):
+        if isinstance(other, Duration):
+            return self.value + other.value
+        return self.value + other
+
+    def __radd__(self, other):
+        return other + self.value
+
 
 class TimeSignature:
     """A musical time signature like 4/4 or 6/8."""
@@ -431,6 +449,7 @@ class Note:
     bend: float = 0.0
     bend_type: str = "smooth"  # "smooth" (log), "linear", "late"
     lyric: str = ""  # syllable for vocal synth
+    articulation: str = ""  # "", "staccato", "legato", "marcato", "tenuto", "accent", "fermata"
     _hold: bool = False  # if True, don't advance beat position
 
     @property
@@ -545,6 +564,33 @@ class DrumSound(Enum):
     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:
+    """Wrapper so a DrumSound can be placed in a Part's note list."""
+    __slots__ = ('sound',)
+
+    def __init__(self, sound: DrumSound):
+        self.sound = sound
+
+    def pitch(self, **kwargs):
+        return -self.sound.value
 
 
 class _Hit:
@@ -1572,6 +1618,231 @@ 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
@@ -1889,6 +2160,74 @@ Pattern._PRESETS["soli"] = dict(
     ],
 )
 
+# Dununba — heavy bass-driven rhythm (accompaniment djembe part)
+Pattern._PRESETS["dununba"] = dict(
+    name="dununba",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(JB, 0.0, 110), _h(JB, 0.5, 95),
+        _h(JT, 1.0, 75), _h(JB, 1.5, 100),
+        _h(JB, 2.0, 108), _h(JT, 2.5, 70),
+        _h(JB, 3.0, 105), _h(JB, 3.5, 90), _h(JT, 3.75, 65),
+    ],
+)
+
+# Tiriba — joyful Susu rhythm from Guinea
+Pattern._PRESETS["tiriba"] = dict(
+    name="tiriba",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(JT, 0.0, 85), _h(JS, 0.25, 95), _h(JT, 0.5, 80),
+        _h(JB, 1.0, 100), _h(JT, 1.5, 75),
+        _h(JS, 2.0, 92), _h(JT, 2.25, 78), _h(JT, 2.5, 80),
+        _h(JB, 3.0, 105), _h(JS, 3.5, 88), _h(JT, 3.75, 72),
+    ],
+)
+
+# Yankadi — gentle greeting/welcome rhythm from Guinea
+Pattern._PRESETS["yankadi"] = dict(
+    name="yankadi",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(JB, 0.0, 90), _h(JT, 0.5, 70),
+        _h(JT, 1.0, 72), _h(JS, 1.5, 85),
+        _h(JB, 2.0, 88), _h(JT, 2.5, 68),
+        _h(JS, 3.0, 82), _h(JT, 3.5, 65),
+    ],
+)
+
+# Djansa — fast Malinke dance rhythm
+Pattern._PRESETS["djansa"] = dict(
+    name="djansa",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(JS, 0.0, 100), _h(JT, 0.25, 72), _h(JT, 0.5, 70),
+        _h(JB, 0.75, 95),
+        _h(JS, 1.0, 98), _h(JT, 1.25, 68), _h(JB, 1.5, 92),
+        _h(JS, 2.0, 102), _h(JT, 2.25, 75), _h(JT, 2.5, 72),
+        _h(JB, 2.75, 90),
+        _h(JS, 3.0, 105), _h(JT, 3.25, 70), _h(JB, 3.5, 95),
+        _h(JS, 3.75, 88),
+    ],
+)
+
+# Mendiani — women's dance rhythm, celebratory
+Pattern._PRESETS["mendiani"] = dict(
+    name="mendiani",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(JB, 0.0, 100), _h(JT, 0.25, 65), _h(JS, 0.5, 90),
+        _h(JT, 1.0, 70), _h(JB, 1.5, 95), _h(JT, 1.75, 68),
+        _h(JS, 2.0, 92), _h(JT, 2.5, 72), _h(JS, 2.75, 85),
+        _h(JB, 3.0, 105), _h(JT, 3.25, 65), _h(JS, 3.5, 95),
+    ],
+)
+
 # ── Fill presets ──────────────────────────────────────────────────────────
 
 Pattern._FILLS["rock"] = dict(
@@ -2274,6 +2613,160 @@ Pattern._FILLS["tabla call"] = dict(
     ],
 )
 
+# ── Djembe fills ─────────────────────────────────────────────────────────
+
+# Djembe call — bass-tone-slap conversation building to climax
+Pattern._FILLS["djembe call"] = dict(
+    name="djembe call fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(JB, 0.0, 100), _h(JT, 0.25, 70), _h(JT, 0.5, 72),
+        _h(JS, 0.75, 90),
+        _h(JB, 1.0, 95), _h(JT, 1.25, 68), _h(JS, 1.5, 88),
+        _h(JT, 1.75, 75),
+        _h(JS, 2.0, 100), _h(JS, 2.25, 95), _h(JT, 2.5, 78),
+        _h(JB, 2.75, 105),
+        _h(JS, 3.0, 110), _h(JT, 3.25, 80), _h(JS, 3.5, 112),
+        _h(JB, 3.75, 120),
+    ],
+)
+
+# Djembe roll — rapid slaps accelerating into bass
+Pattern._FILLS["djembe roll"] = dict(
+    name="djembe roll fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Accelerating slap roll
+        *[_h(JS, i * 0.125, 50 + i * 4) for i in range(16)],
+        # Bass accents punching through
+        _h(JB, 2.0, 105), _h(JB, 2.5, 108),
+        _h(JB, 3.0, 112), _h(JT, 3.25, 85),
+        _h(JB, 3.5, 115), _h(JS, 3.75, 100),
+    ],
+)
+
+# Djembe break — syncopated West African-style break
+Pattern._FILLS["djembe break"] = dict(
+    name="djembe break fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(JB, 0.0, 105), _h(JT, 0.25, 65), _h(JS, 0.5, 90),
+        _h(JT, 0.75, 70), _h(JB, 1.0, 100),
+        _h(JS, 1.25, 85), _h(JS, 1.5, 88),
+        _h(JB, 1.75, 95), _h(JT, 2.0, 72),
+        _h(JS, 2.25, 92), _h(JB, 2.5, 108),
+        _h(JT, 2.75, 68), _h(JS, 2.875, 55),
+        _h(JB, 3.0, 115), _h(JS, 3.25, 100),
+        _h(JB, 3.5, 118), _h(JB, 3.75, 120),
+    ],
+)
+
+# ── Cajón fills ──────────────────────────────────────────────────────────
+
+# Cajón flam run — slaps accelerating into bass hit
+Pattern._FILLS["cajon flam"] = dict(
+    name="cajon flam fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(CSL, 0.0, 95), _h(CT, 0.125, 45), _h(CSL, 0.25, 90),
+        _h(CB, 0.5, 100), _h(CT, 0.75, 50),
+        _h(CSL, 1.0, 88), _h(CT, 1.125, 42), _h(CSL, 1.25, 92),
+        _h(CT, 1.5, 55), _h(CSL, 1.75, 85),
+        _h(CB, 2.0, 105), _h(CSL, 2.25, 75), _h(CT, 2.5, 48),
+        _h(CSL, 2.75, 80), _h(CT, 2.875, 40),
+        _h(CB, 3.0, 110), _h(CSL, 3.25, 90), _h(CSL, 3.5, 95),
+        _h(CB, 3.75, 120),
+    ],
+)
+
+# Cajón rumble — fast taps building to slap accents
+Pattern._FILLS["cajon rumble"] = dict(
+    name="cajon rumble fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        *[_h(CT, i * 0.125, 35 + i * 3) for i in range(16)],
+        _h(CSL, 2.0, 95), _h(CSL, 2.5, 100),
+        _h(CB, 3.0, 108), _h(CSL, 3.25, 88),
+        _h(CB, 3.5, 112), _h(CSL, 3.75, 95),
+    ],
+)
+
+# Cajón breakdown — syncopated bass-slap groove
+Pattern._FILLS["cajon breakdown"] = dict(
+    name="cajon breakdown fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        _h(CB, 0.0, 100), _h(CT, 0.25, 45), _h(CSL, 0.5, 85),
+        _h(CB, 1.0, 95), _h(CSL, 1.25, 78), _h(CT, 1.5, 50),
+        _h(CSL, 1.75, 82),
+        _h(CB, 2.0, 105), _h(CT, 2.125, 40), _h(CT, 2.25, 42),
+        _h(CSL, 2.5, 90), _h(CT, 2.75, 48),
+        _h(CB, 3.0, 115), _h(CSL, 3.25, 95),
+        _h(CB, 3.5, 110), _h(CSL, 3.75, 100),
+    ],
+)
+
+# ── Metal fills (using metal kit) ────────────────────────────────────────
+
+# Metal triplet — double kick triplets with snare accents
+Pattern._FILLS["metal triplet"] = dict(
+    name="metal triplet fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Triplet kick pattern (12 kicks across 4 beats = triplet 8ths)
+        *[_h(MK, i * (1/3), 95 + (i % 3 == 0) * 15) for i in range(12)],
+        # Snare accents on downbeats
+        _h(MS, 0.0, 110), _h(MS, 1.0, 105),
+        _h(MS, 2.0, 110), _h(MS, 3.0, 115),
+        # Hat on upbeats
+        _h(MH, 0.5, 60), _h(MH, 1.5, 60),
+        _h(MH, 2.5, 65), _h(MH, 3.5, 70),
+    ],
+)
+
+# Metal blastbeat variant — alternating snare/kick 32nds
+Pattern._FILLS["metal blast"] = dict(
+    name="metal blast fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Alternating kick-snare at 32nd note speed for 2 beats
+        *[_h(MK if i % 2 == 0 else MS, i * 0.125, 100 + i) for i in range(16)],
+        # Then crash into half-time for 2 beats
+        _h(MK, 2.0, 120), _h(MS, 2.5, 115),
+        _h(MK, 3.0, 120), _h(MH, 3.25, 80),
+        _h(MS, 3.5, 120),
+    ],
+)
+
+# Metal cascade — descending snare/kick rolls
+Pattern._FILLS["metal cascade"] = dict(
+    name="metal cascade fill",
+    time_signature="4/4",
+    beats=4.0,
+    hits=[
+        # Fast snare roll beat 1
+        *[_h(MS, i * 0.125, 80 + i * 5) for i in range(8)],
+        # Double kick beat 2
+        *[_h(MK, 1.0 + i * 0.125, 90 + i * 3) for i in range(8)],
+        # Alternating beat 3
+        _h(MS, 2.0, 105), _h(MK, 2.125, 95),
+        _h(MS, 2.25, 108), _h(MK, 2.375, 98),
+        _h(MS, 2.5, 110), _h(MK, 2.625, 100),
+        _h(MS, 2.75, 112), _h(MK, 2.875, 102),
+        # Crash ending
+        _h(MK, 3.0, 120), _h(MS, 3.0, 120),
+        _h(MK, 3.5, 120), _h(MS, 3.5, 120),
+    ],
+)
+
 
 class Part:
     """A named voice within a Score, with its own synth, envelope, and effects.
@@ -2328,6 +2821,7 @@ 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
@@ -2374,6 +2868,7 @@ 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()
@@ -2384,7 +2879,8 @@ class Part:
         self._automation: list[tuple[float, dict]] = []  # (beat, {param: value})
 
     def add(self, tone_or_string, duration=Duration.QUARTER, *, velocity: int = 100,
-            bend: float = 0.0, bend_type: str = "smooth", lyric: str = "") -> "Part":
+            bend: float = 0.0, bend_type: str = "smooth", lyric: str = "",
+            articulation: str = "") -> "Part":
         """Add a note. Accepts Tone/Chord objects or note strings like ``"E5"``.
 
         Duration can be a ``Duration`` enum or a raw float (beats).
@@ -2392,6 +2888,10 @@ class Part:
         Bend specifies a pitch bend in semitones over the note duration
         (e.g. ``bend=2`` bends up a whole step, ``bend=-1`` bends down
         a half step). Used for guitar bends, sitar meends, slides.
+        Articulation changes how the note is played: ``"staccato"`` (short,
+        ~40% duration), ``"legato"`` (overlaps next note), ``"marcato"``
+        (heavy accent), ``"tenuto"`` (full duration, soft attack),
+        ``"accent"`` (velocity bump), ``"fermata"`` (held ~50% longer).
 
         Returns self for chaining.
         """
@@ -2402,11 +2902,13 @@ class Part:
             duration = _RawDuration(duration)
         self.notes.append(Note(tone=tone_or_string, duration=duration,
                                velocity=velocity, bend=bend,
-                               bend_type=bend_type, lyric=lyric))
+                               bend_type=bend_type, lyric=lyric,
+                               articulation=articulation))
         return self
 
     def hold(self, tone_or_string, duration=Duration.QUARTER, *, velocity: int = 100,
-             bend: float = 0.0, bend_type: str = "smooth", lyric: str = "") -> "Part":
+             bend: float = 0.0, bend_type: str = "smooth", lyric: str = "",
+             articulation: str = "") -> "Part":
         """Add a note without advancing the beat position.
 
         The note plays at the current position but the next note
@@ -2431,9 +2933,247 @@ class Part:
             duration = _RawDuration(duration)
         self.notes.append(Note(tone=tone_or_string, duration=duration,
                                velocity=velocity, bend=bend,
-                               bend_type=bend_type, lyric=lyric, _hold=True))
+                               bend_type=bend_type, lyric=lyric,
+                               articulation=articulation, _hold=True))
         return self
 
+    def hit(self, sound, duration=Duration.EIGHTH, *, velocity: int = 100,
+            articulation: str = "") -> "Part":
+        """Add a drum hit to this part.
+
+        Places a drum sound into the note stream so it goes through the
+        normal renderer — meaning articulations, humanize, and effects
+        all work on individual hits.
+
+        Args:
+            sound: A :class:`DrumSound` enum member (e.g. ``DrumSound.KICK``).
+            duration: How long the hit occupies in the timeline (default 8th note).
+            velocity: Hit loudness 1-127.
+            articulation: ``"accent"``, ``"staccato"``, ``"marcato"``, etc.
+
+        Example::
+
+            >>> drums = score.part("kit", synth="sine")
+            >>> drums.hit(DrumSound.KICK, Duration.QUARTER, articulation="accent")
+            >>> drums.hit(DrumSound.CLOSED_HAT, Duration.EIGHTH)
+        """
+        if isinstance(duration, (int, float)):
+            duration = _RawDuration(duration)
+        self.notes.append(Note(tone=_DrumTone(sound), duration=duration,
+                               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":
+        """Add notes with velocity ramping up (getting louder).
+
+        Args:
+            notes: List of note strings (e.g. ``["C4", "D4", "E4"]``).
+            duration: Duration for each note.
+            start_vel: Starting velocity (quiet).
+            end_vel: Ending velocity (loud).
+            articulation: Optional articulation for all notes.
+
+        Example::
+
+            >>> piano.crescendo(["C4","D4","E4","F4","G4"], Duration.QUARTER,
+            ...                 start_vel=40, end_vel=110)
+        """
+        return self.dynamics(notes, duration, velocities=(start_vel, end_vel),
+                             articulation=articulation)
+
+    def decrescendo(self, notes, duration=Duration.QUARTER, *,
+                    start_vel: int = 110, end_vel: int = 40,
+                    articulation: str = "") -> "Part":
+        """Add notes with velocity ramping down (getting quieter).
+
+        Args:
+            notes: List of note strings.
+            duration: Duration for each note.
+            start_vel: Starting velocity (loud).
+            end_vel: Ending velocity (quiet).
+            articulation: Optional articulation for all notes.
+
+        Example::
+
+            >>> piano.decrescendo(["G4","F4","E4","D4","C4"], Duration.QUARTER,
+            ...                   start_vel=110, end_vel=40)
+        """
+        return self.dynamics(notes, duration, velocities=(start_vel, end_vel),
+                             articulation=articulation)
+
+    def dynamics(self, notes, duration=Duration.QUARTER, *,
+                 velocities=None, articulation: str = "") -> "Part":
+        """Add notes with a velocity curve.
+
+        Args:
+            notes: List of note strings or Tone/Chord objects.
+            duration: Duration for each note (or list of durations).
+            velocities: Velocity curve — either a ``(start, end)`` tuple
+                for a linear ramp, or a list of ints (one per note).
+            articulation: Optional articulation for all notes (or list).
+
+        Example::
+
+            >>> # Linear ramp
+            >>> piano.dynamics(["C4","E4","G4","C5"], Duration.QUARTER,
+            ...                velocities=(50, 120))
+            >>> # Custom curve (swell and fade)
+            >>> piano.dynamics(["C4","D4","E4","F4","G4","F4","E4","D4"],
+            ...                Duration.EIGHTH,
+            ...                velocities=[50, 70, 90, 110, 110, 90, 70, 50])
+        """
+        n = len(notes)
+        if n == 0:
+            return self
+
+        # Resolve velocities
+        if velocities is None:
+            vels = [100] * n
+        elif isinstance(velocities, (tuple, list)) and len(velocities) == 2 and isinstance(velocities[0], (int, float)):
+            # (start, end) tuple — linear ramp
+            start_v, end_v = velocities
+            if n == 1:
+                vels = [int(start_v)]
+            else:
+                vels = [int(start_v + (end_v - start_v) * i / (n - 1))
+                        for i in range(n)]
+        else:
+            vels = list(velocities)
+
+        # Resolve durations
+        if isinstance(duration, (list, tuple)):
+            durs = list(duration)
+        else:
+            durs = [duration] * n
+
+        # Resolve articulations
+        if isinstance(articulation, (list, tuple)):
+            arts = list(articulation)
+        else:
+            arts = [articulation] * n
+
+        for note, vel, dur, art in zip(notes, vels, durs, arts):
+            vel = max(1, min(127, vel))
+            self.add(note, dur, velocity=vel, articulation=art)
+
+        return self
+
+    def swell(self, notes, duration=Duration.QUARTER, *,
+              low_vel: int = 40, peak_vel: int = 110,
+              articulation: str = "") -> "Part":
+        """Add notes that swell up then fade back down (< > shape).
+
+        The velocity ramps up to the midpoint then back down,
+        creating the classic orchestral swell.
+
+        Args:
+            notes: List of note strings.
+            duration: Duration for each note.
+            low_vel: Velocity at start and end.
+            peak_vel: Velocity at the peak (midpoint).
+            articulation: Optional articulation.
+
+        Example::
+
+            >>> strings.swell(["C4","D4","E4","F4","G4","F4","E4","D4"],
+            ...               Duration.QUARTER, low_vel=40, peak_vel=110)
+        """
+        n = len(notes)
+        if n <= 2:
+            return self.dynamics(notes, duration, velocities=[peak_vel] * n,
+                                 articulation=articulation)
+        mid = n // 2
+        vels = []
+        for i in range(n):
+            if i <= mid:
+                v = low_vel + (peak_vel - low_vel) * i / mid
+            else:
+                v = peak_vel - (peak_vel - low_vel) * (i - mid) / (n - 1 - mid)
+            vels.append(int(v))
+        return self.dynamics(notes, duration, velocities=vels,
+                             articulation=articulation)
+
     def set(self, **params) -> "Part":
         """Change effect parameters at the current beat position.
 
@@ -2517,6 +3257,79 @@ class Part:
         points = sorted(set(beat for beat, _ in self._automation))
         return points
 
+    def ramp(self, over: float = 4.0, resolution: float = 0.25,
+             curve: str = "linear", **params) -> "Part":
+        """Smoothly ramp parameters from their current values to new targets.
+
+        Generates interpolated automation points — like turning a knob
+        gradually instead of jumping to a new position. Works for any
+        parameter that ``.set()`` accepts.
+
+        Args:
+            over: Duration of the ramp in beats (default 4.0 = 1 bar).
+                Use ``Duration.WHOLE * 4`` for a 4-bar ramp, etc.
+            resolution: How often to insert points, in beats (default 0.25).
+                Lower = smoother but more points.
+            curve: Interpolation shape — ``"linear"`` (default),
+                ``"ease_in"`` (slow start, fast end),
+                ``"ease_out"`` (fast start, slow end),
+                ``"ease_in_out"`` (slow start and end).
+            **params: Target values for any parameter. The ramp starts
+                from the parameter's current value at this beat position.
+
+        Returns:
+            Self for chaining.
+
+        Example::
+
+            >>> lead = score.part("lead", synth="saw", lowpass=200)
+            >>> # Open the filter over 4 bars
+            >>> lead.ramp(over=Duration.WHOLE * 4, lowpass=8000)
+            >>> # Fade reverb in over 2 bars
+            >>> pad.ramp(over=Duration.WHOLE * 2, reverb=0.5)
+            >>> # Multiple params at once with easing
+            >>> lead.ramp(over=8.0, curve="ease_in", lowpass=6000, distortion=0.4)
+        """
+        current_beat = sum(n.beats for n in self.notes)
+
+        # Map param names to internal names
+        param_map = {
+            "reverb": "reverb_mix", "delay": "delay_mix",
+            "distortion": "distortion_mix", "chorus": "chorus_mix",
+            "phaser": "phaser_mix",
+        }
+
+        # Get current values for each param
+        current_params = self._get_params_at(current_beat)
+        ramps = {}
+        for param, target in params.items():
+            internal = param_map.get(param, param)
+            start = current_params.get(internal, getattr(self, internal, 0.0))
+            ramps[internal] = (float(start), float(target))
+
+        # Generate interpolated points
+        beat = 0.0
+        while beat <= over:
+            t = beat / over if over > 0 else 1.0
+            t = max(0.0, min(1.0, t))
+
+            # Apply curve
+            if curve == "ease_in":
+                t = t * t
+            elif curve == "ease_out":
+                t = 1.0 - (1.0 - t) ** 2
+            elif curve == "ease_in_out":
+                t = 3 * t * t - 2 * t * t * t
+
+            point = {}
+            for internal, (start, end) in ramps.items():
+                point[internal] = start + (end - start) * t
+
+            self._automation.append((current_beat + beat, point))
+            beat += resolution
+
+        return self
+
     def lfo(self, param: str, *, rate: float = 0.5, min: float = 0.0,
             max: float = 1.0, bars: float = 4, shape: str = "sine",
             resolution: float = 0.25) -> "Part":
@@ -3044,6 +3857,7 @@ 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:
@@ -3156,7 +3970,7 @@ 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():

pytheory/scales.py

@@ -2,8 +2,6 @@ from __future__ import annotations
 
 from typing import Optional, Union
 
-import numeral
-
 from .systems import SYSTEMS, System
 from .tones import Tone
 
@@ -49,7 +47,8 @@ class Scale:
     def __repr__(self) -> str:
         r = []
         for (i, tone) in enumerate(self.tones):
-            degree = numeral.int2roman(i + 1, only_ascii=True)
+            from ._statics import int2roman
+            degree = int2roman(i + 1)
             r += [f"{degree}={tone.full_name}"]
 
         r = " ".join(r)
@@ -200,7 +199,7 @@ class Scale:
             >>> scale.progression("I", "IV", "V", "I")
             [<Chord (C,E,G)>, <Chord (F,A,C)>, <Chord (G,B,D)>, <Chord (C,E,G)>]
         """
-        import numeral as numeral_mod
+        from ._statics import roman2int
         chords = []
         for num in numerals:
             is_seventh = num.endswith("7")
@@ -213,7 +212,7 @@ class Scale:
             elif clean.startswith("#") and len(clean) > 1:
                 clean = clean[1:]
                 flat_offset = 1  # one semitone up
-            degree = numeral_mod.roman2int(clean.upper()) - 1
+            degree = roman2int(clean.upper()) - 1
             if is_seventh:
                 chord = self.seventh(degree)
             else:
@@ -406,7 +405,8 @@ class Scale:
         if isinstance(item, str):
             degrees = []
             for (i, tone) in enumerate(self.tones):
-                degrees.append(numeral.int2roman(i + 1, only_ascii=True))
+                from ._statics import int2roman
+                degrees.append(int2roman(i + 1))
 
             if item in degrees:
                 item = degrees.index(item)

test_pytheory.py

@@ -4869,6 +4869,19 @@ def test_duration_values():
     assert abs(Duration.TRIPLET_QUARTER.value - 2 / 3) < 1e-9
 
 
+def test_duration_arithmetic():
+    # Multiplication
+    assert Duration.WHOLE * 2 == 8.0
+    assert 2 * Duration.HALF == 4.0
+    assert Duration.QUARTER * 3 == 3.0
+    # Division
+    assert Duration.WHOLE / 2 == 2.0
+    # Addition
+    assert Duration.HALF + Duration.QUARTER == 3.0
+    assert Duration.HALF + 1.0 == 3.0
+    assert 1.0 + Duration.HALF == 3.0
+
+
 def test_time_signature_from_string_4_4():
     ts = TimeSignature.from_string("4/4")
     assert ts.beats == 4
@@ -7151,3 +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__

uv.lock

@@ -486,14 +486,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/d3/ac/686789b9145413f1a61878c407210e41bfdb097976864e0913078b24098c/myst_parser-5.0.0-py3-none-any.whl", hash = "sha256:ab31e516024918296e169139072b81592336f2fef55b8986aa31c9f04b5f7211", size = 84533, upload-time = "2026-01-15T09:08:16.788Z" },
 ]
 
-[[package]]
-name = "numeral"
-version = "0.1.0.17"
-source = { registry = "https://pypi.org/simple" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/17/0d/ac6a186e169fcbdfea316f78fb5e34981bcf8d5c1d7cc8b6581f597e1e4c/numeral-0.1.0.17-py2.py3-none-any.whl", hash = "sha256:7dff0c1efb9b3655c9c1dc93b4666993741b15abcac0dc01dcb96b21cc20f6ae", size = 22066, upload-time = "2020-04-12T08:24:59.129Z" },
-]
-
 [[package]]
 name = "numpy"
 version = "2.2.6"
@@ -698,10 +690,9 @@ wheels = [
 
 [[package]]
 name = "pytheory"
-version = "0.36.4"
+version = "0.39.2"
 source = { editable = "." }
 dependencies = [
-    { name = "numeral" },
     { name = "scipy", version = "1.15.3", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version < '3.11'" },
     { name = "scipy", version = "1.17.1", source = { registry = "https://pypi.org/simple" }, marker = "python_full_version >= '3.11'" },
     { name = "sounddevice" },
@@ -721,7 +712,6 @@ docs = [
 
 [package.metadata]
 requires-dist = [
-    { name = "numeral" },
     { name = "scipy" },
     { name = "sounddevice" },
 ]