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kennethreitz
256d2d45c9
Silk Road: D minor, 95 BPM. Koto → sitar+tabla → mandolin+doumbek → guitar+cajon → all together. Musicians join the caravan, nobody leaves. 2AM: Eb minor, 72 BPM, swing 0.15. Lo-fi hip hop study beats. Rhodes, vinyl crackle, lazy boom-bap, upright bass, saxophone. The anti-acid track. Just vibes. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
217 lines
8.1 KiB
Python
217 lines
8.1 KiB
Python
"""
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2AM — lo-fi hip hop study beats. Late night, rain on the window.
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Rhodes, vinyl crackle, lazy drums, upright bass, saxophone.
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Just vibes.
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"""
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from pytheory import Key, Duration, Score, Tone, play_score
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from pytheory.rhythm import DrumSound
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key = Key("Eb", "minor")
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s = key.scale
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prog = key.progression("i", "VI", "iv", "VII")
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# Eb minor: Eb F Gb Ab Bb Cb Db
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Eb = s[0]; F = s[1]; Gb = s[2]; Ab = s[3]
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Bb = s[4]; Cb = s[5]; Db = s[6]
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score = Score("4/4", bpm=72, swing=0.15)
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K = DrumSound.KICK
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S = DrumSound.SNARE
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CH = DrumSound.CLOSED_HAT
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# ═══════════════════════════════════════════════════════════════════
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# STRUCTURE (64 bars, ~5.5 min at 72 BPM):
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# Bars 1-8: Rhodes alone, establishing the vibe
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# Bars 9-16: Drums enter, lazy boom-bap
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# Bars 17-32: Bass enters, the groove settles
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# Bars 33-48: Sax melody — the heart
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# Bars 49-56: Sax + rhodes trading, peak warmth
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# Bars 57-64: Stripping back, rhodes alone again
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# ═══════════════════════════════════════════════════════════════════
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# ── RHODES — the soul of lo-fi ──────────────────────────────────
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rhodes = score.part("rhodes", instrument="electric_piano", volume=0.35,
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reverb=0.5, reverb_type="taj_mahal",
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tremolo_depth=0.12, tremolo_rate=2.5,
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chorus=0.2, chorus_rate=0.3, chorus_depth=0.005,
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humanize=0.12, saturation=0.15)
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# Full 64 bars — chords throughout, the anchor
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for _ in range(16):
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for chord in prog:
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rhodes.add(chord, Duration.WHOLE, velocity=65)
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# ── VINYL CRACKLE — noise texture, always on ───────────────────
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vinyl = score.part("vinyl", synth="noise", envelope="pad", volume=0.04,
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lowpass=3000)
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for _ in range(64):
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vinyl.add(Eb, Duration.WHOLE, velocity=40)
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# ── DRUMS — lazy boom-bap, enters bar 9 ────────────────────────
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drums = score.part("drums", volume=0.35, humanize=0.12)
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for _ in range(8):
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drums.rest(Duration.WHOLE)
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# Bars 9-56: the laziest beat alive
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for bar in range(48):
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# Kick on 1, ghost kick on the & of 2
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drums.hit(K, Duration.QUARTER, velocity=90)
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drums.hit(CH, Duration.EIGHTH, velocity=45)
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drums.hit(K, Duration.EIGHTH, velocity=55)
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# Snare on 2
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drums.hit(S, Duration.QUARTER, velocity=82)
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# Kick ghost on & of 3
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drums.hit(K, Duration.EIGHTH, velocity=50)
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drums.hit(CH, Duration.EIGHTH, velocity=42)
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drums.hit(S, Duration.QUARTER, velocity=78)
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# Bars 57-64: fading out
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for bar in range(8):
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vel = max(25, 85 - bar * 7)
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drums.hit(K, Duration.QUARTER, velocity=vel)
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drums.hit(CH, Duration.EIGHTH, velocity=max(15, vel - 40))
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drums.hit(K, Duration.EIGHTH, velocity=max(15, vel - 35))
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drums.hit(S, Duration.QUARTER, velocity=max(20, vel - 8))
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drums.hit(K, Duration.EIGHTH, velocity=max(15, vel - 38))
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drums.hit(CH, Duration.EIGHTH, velocity=max(15, vel - 42))
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drums.hit(S, Duration.QUARTER, velocity=max(20, vel - 10))
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# ── UPRIGHT BASS — warm, round, enters bar 17 ──────────────────
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bass = score.part("bass", instrument="upright_bass", volume=0.35,
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reverb=0.2, lowpass=800, humanize=0.1)
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for _ in range(16):
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bass.rest(Duration.WHOLE)
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# Bars 17-56: walking bass following the roots
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bass_lines = [
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# i — Ebm
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[(Eb.add(-24), Duration.QUARTER, 85),
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(Gb.add(-24), Duration.QUARTER, 72),
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(Bb.add(-24), Duration.QUARTER, 78),
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(Ab.add(-24), Duration.QUARTER, 70)],
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# VI — Cb
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[(Cb.add(-24), Duration.QUARTER, 82),
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(Eb.add(-12), Duration.QUARTER, 70),
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(Db.add(-24), Duration.QUARTER, 75),
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(Cb.add(-24), Duration.QUARTER, 68)],
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# iv — Abm
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[(Ab.add(-24), Duration.QUARTER, 85),
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(Cb.add(-24), Duration.QUARTER, 72),
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(Bb.add(-24), Duration.QUARTER, 78),
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(Ab.add(-24), Duration.QUARTER, 70)],
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# VII — Db
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[(Db.add(-24), Duration.QUARTER, 82),
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(F.add(-24), Duration.QUARTER, 70),
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(Ab.add(-24), Duration.QUARTER, 75),
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(Db.add(-12), Duration.QUARTER, 68)],
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]
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for _ in range(10):
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for bass_bar in bass_lines:
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for note, dur, vel in bass_bar:
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bass.add(note, dur, velocity=vel)
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# Bars 57-64: fading
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for _ in range(2):
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for bass_bar in bass_lines:
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for note, dur, vel in bass_bar:
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bass.add(note, dur, velocity=max(30, vel - 25))
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# ── SAXOPHONE — the melody, enters bar 33 ──────────────────────
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sax = score.part("sax", instrument="saxophone", volume=0.35,
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reverb=0.45, reverb_type="taj_mahal",
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delay=0.15, delay_time=0.417, delay_feedback=0.25,
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humanize=0.1)
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for _ in range(32):
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sax.rest(Duration.WHOLE)
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# Bars 33-48: lazy, bluesy melody — lots of space
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sax_phrases = [
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# Phrase 1: opening statement
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[(Bb, Duration.HALF, 82), (Ab, Duration.QUARTER, 75),
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(Gb, Duration.QUARTER, 70)],
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[(Eb, Duration.HALF, 78), (None, Duration.HALF, 0)],
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# Phrase 2: climbing
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[(None, Duration.QUARTER, 0), (Gb, Duration.QUARTER, 72),
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(Ab, Duration.QUARTER, 78), (Bb, Duration.QUARTER, 82)],
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[(Db.add(12), Duration.HALF, 85), (Cb, Duration.QUARTER, 75),
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(Bb, Duration.QUARTER, 72)],
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# Phrase 3: the cry
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[(Bb, Duration.DOTTED_HALF, 88),
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(Ab, Duration.QUARTER, 78)],
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[(Gb, Duration.QUARTER, 72), (Eb, Duration.QUARTER, 68),
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(None, Duration.HALF, 0)],
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# Phrase 4: resolution
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[(Eb, Duration.QUARTER, 75), (F, Duration.QUARTER, 72),
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(Gb, Duration.QUARTER, 78), (Ab, Duration.QUARTER, 75)],
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[(Eb, Duration.WHOLE, 80)],
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]
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for _ in range(2):
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for phrase in sax_phrases:
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for note, dur, vel in phrase:
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if note is None:
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sax.rest(dur)
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else:
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sax.add(note, dur, velocity=vel)
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# Bars 49-56: higher, more expressive
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sax_high = [
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[(Eb.add(12), Duration.HALF, 90), (Db.add(12), Duration.QUARTER, 82),
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(Cb, Duration.QUARTER, 78)],
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[(Bb, Duration.HALF, 85), (None, Duration.QUARTER, 0),
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(Ab, Duration.QUARTER, 75)],
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[(Bb, Duration.QUARTER, 80), (Db.add(12), Duration.QUARTER, 85),
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(Eb.add(12), Duration.HALF, 92)],
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[(Db.add(12), Duration.QUARTER, 82), (Bb, Duration.QUARTER, 78),
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(Ab, Duration.HALF, 75)],
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]
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for _ in range(2):
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for phrase in sax_high:
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for note, dur, vel in phrase:
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if note is None:
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sax.rest(dur)
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else:
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sax.add(note, dur, velocity=vel)
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# Bars 57-64: one last phrase, fading
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for phrase in sax_phrases[:4]:
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for note, dur, vel in phrase:
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if note is None:
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sax.rest(dur)
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else:
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sax.add(note, dur, velocity=max(35, vel - 20))
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for _ in range(4):
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sax.rest(Duration.WHOLE)
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# ── PAD — warmth underneath ─────────────────────────────────────
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pad = score.part("pad", synth="supersaw", envelope="pad", volume=0.08,
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reverb=0.6, reverb_type="taj_mahal",
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chorus=0.3, chorus_rate=0.15, chorus_depth=0.008,
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lowpass=1200)
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for _ in range(16):
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for chord in prog:
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pad.add(chord, Duration.WHOLE, velocity=45)
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# ═════════════════════════════════════════════════════════════════
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import sys
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print(f"Key: {key}")
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print(f"BPM: 72 (swing 0.15)")
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print(f"Parts: {list(score.parts.keys())}")
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print(f"Duration: {score.duration_ms / 1000:.1f}s | {score.measures} measures")
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if "--live" in sys.argv:
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print("Playing 2AM (live engine)...")
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from pytheory_live.live import LiveEngine
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engine = LiveEngine(buffer_size=1024)
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engine.play_score(score)
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else:
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print("Playing 2AM...")
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play_score(score)
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