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Track 2: Monsoon Bass — Indian classical meets trip-hop

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A Phrygian (Bhairavi), shruti just intonation, 98 BPM.
Breakbeat + tabla layer, 808 sub, sitar through taj mahal delay fog,
supersaw pad wash, hi-hat texture. Builds from sparse to full over 16 bars.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kenneth Reitz
2026-03-30 02:56:16 -04:00
parent 9a30612f05
commit 95b8075f82
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"""
MONSOON BASS — Indian classical meets trip-hop.
Talvin Singh meets Massive Attack. Tabla over breakbeat,
sitar loops through delay fog, 808 sub holds it all down.
"""
from pytheory import Key, Duration, Score, play_score
from pytheory.rhythm import DrumSound
# ── Scale ────────────────────────────────────────────────────────
key = Key("A", "phrygian")
s = key.scale # A Bb C D E F G
Sa = s[0] # A (Sa)
Re = s[1] # Bb (komal Re)
Ga = s[2] # C (komal Ga)
Ma = s[3] # D (Ma)
Pa = s[4] # E (Pa)
Dha = s[5] # F (komal Dha)
Ni = s[6] # G (komal Ni)
score = Score("4/4", bpm=98, system="shruti", temperament="just")
# ── Tabla Bols ──────────────────────────────────────────────────
NA = DrumSound.TABLA_NA
TIT = DrumSound.TABLA_TIT
GE = DrumSound.TABLA_GE
tDHA = DrumSound.TABLA_DHA
KE = DrumSound.TABLA_KE
GEB = DrumSound.TABLA_GE_BEND
# ── BREAKBEAT — the spine ───────────────────────────────────────
score.drums("breakbeat", repeats=16, fill="bayan", fill_every=8)
score.set_drum_effects(reverb=0.2, reverb_decay=1.0, volume=0.35, humanize=0.12)
# ── TABLA LAYER — rides on top of the breakbeat ─────────────────
tabla = score.part("tabla", volume=0.0, reverb=0.3, reverb_decay=1.2,
humanize=0.08)
# Silent for 4 bars — let the beat establish
for _ in range(4):
tabla.rest(Duration.WHOLE)
# Bars 5-16: looping tabla pattern (keherwa-influenced)
tabla.set(volume=0.35)
for _ in range(12):
tabla.hit(tDHA, Duration.EIGHTH, velocity=95, articulation="accent")
tabla.hit(GE, Duration.EIGHTH, velocity=65)
tabla.hit(NA, Duration.EIGHTH, velocity=75)
tabla.hit(TIT, Duration.EIGHTH, velocity=50)
tabla.hit(NA, Duration.EIGHTH, velocity=70)
tabla.hit(TIT, Duration.EIGHTH, velocity=45)
tabla.hit(tDHA, Duration.EIGHTH, velocity=88, articulation="accent")
tabla.hit(NA, Duration.EIGHTH, velocity=68)
# ── 808 SUB BASS — deep, sustained, minimal ────────────────────
sub = score.part("sub", synth="sine", envelope="pad", volume=0.55,
distortion=0.3, distortion_drive=4.0,
lowpass=160, lowpass_q=2.0)
# Bars 1-4: just the root, establishing gravity
for _ in range(4):
sub.add(Sa.add(-24), Duration.HALF) # Sa low
sub.rest(Duration.QUARTER)
sub.add(Sa.add(-24), Duration.QUARTER)
# Bars 5-16: minimal bass line, mostly Sa and Pa
for _ in range(3):
sub.add(Sa.add(-24), Duration.HALF)
sub.rest(Duration.QUARTER)
sub.add(Pa.add(-24), Duration.QUARTER)
sub.add(Sa.add(-24), Duration.HALF)
sub.rest(Duration.HALF)
sub.add(Ma.add(-24), Duration.HALF)
sub.rest(Duration.QUARTER)
sub.add(Sa.add(-24), Duration.QUARTER)
sub.add(Sa.add(-24), Duration.DOTTED_HALF)
sub.rest(Duration.QUARTER)
# ── SITAR LOOP — hypnotic, delay-drenched ──────────────────────
sitar = score.part("sitar", instrument="sitar", volume=0.0,
reverb=0.5, reverb_type="taj_mahal",
delay=0.45, delay_time=0.306, delay_feedback=0.5,
pan=-0.2, saturation=0.2, humanize=0.08)
# Silent for 2 bars
sitar.rest(Duration.WHOLE)
sitar.rest(Duration.WHOLE)
# Bars 3-8: sparse, mysterious — notes float in delay
sitar.set(volume=0.4)
sitar_phrase_a = [
(Sa, Duration.QUARTER, 85),
(None, Duration.EIGHTH, 0),
(Re, Duration.EIGHTH, 70),
(Ga, Duration.QUARTER, 90),
(None, Duration.QUARTER, 0),
# bar 2
(Ma, Duration.EIGHTH, 80),
(Ga, Duration.EIGHTH, 70),
(Re, Duration.QUARTER, 75),
(Sa, Duration.QUARTER, 65),
(None, Duration.QUARTER, 0),
]
for _ in range(3):
for note, dur, vel in sitar_phrase_a:
if note is None:
sitar.rest(dur)
else:
sitar.add(note, dur, velocity=vel)
# Bars 9-12: more active, higher register
sitar.set(volume=0.45)
sitar_phrase_b = [
(Pa, Duration.EIGHTH, 100),
(Ma, Duration.EIGHTH, 80),
(Pa, Duration.QUARTER, 95),
(None, Duration.EIGHTH, 0),
(Dha, Duration.EIGHTH, 85),
(Pa, Duration.QUARTER, 90),
# bar 2
(Ma, Duration.QUARTER, 80),
(Ga, Duration.EIGHTH, 70),
(Re, Duration.EIGHTH, 75),
(Sa, Duration.HALF, 85),
]
for _ in range(2):
for note, dur, vel in sitar_phrase_b:
if note is None:
sitar.rest(dur)
else:
sitar.add(note, dur, velocity=vel)
# Bars 13-16: climax — faster, descending runs
sitar.set(volume=0.5)
sitar_phrase_c = [
(Sa.add(12), Duration.EIGHTH, 115),
(Ni, Duration.EIGHTH, 100),
(Dha, Duration.EIGHTH, 90),
(Pa, Duration.EIGHTH, 85),
(Ma, Duration.QUARTER, 95),
(Ga, Duration.QUARTER, 80),
# bar 2
(Re, Duration.EIGHTH, 75),
(Sa, Duration.EIGHTH, 70),
(Re, Duration.QUARTER, 80),
(Ma, Duration.QUARTER, 90),
(Sa, Duration.QUARTER, 75),
(None, Duration.QUARTER, 0),
]
for _ in range(2):
for note, dur, vel in sitar_phrase_c:
if note is None:
sitar.rest(dur)
else:
sitar.add(note, dur, velocity=vel)
# ── PAD — dark, atmospheric wash ────────────────────────────────
pad = score.part("pad", synth="supersaw", envelope="pad", volume=0.0,
reverb=0.7, reverb_type="taj_mahal",
chorus=0.4, chorus_rate=0.15, chorus_depth=0.01,
lowpass=1400, pan=0.1)
pad.lfo("lowpass", rate=0.0625, min=600, max=2000, bars=16, shape="triangle")
# Silent for 4 bars
for _ in range(4):
pad.rest(Duration.WHOLE)
# Bars 5-8: creep in
pad.set(volume=0.12)
pad.hold(Sa.add(-12), Duration.WHOLE * 4, velocity=50)
pad.add(Pa.add(-12), Duration.WHOLE, velocity=45)
pad.add(Ma.add(-12), Duration.WHOLE, velocity=50)
pad.add(Pa.add(-12), Duration.WHOLE, velocity=45)
pad.add(Sa.add(-12), Duration.WHOLE, velocity=50)
# Bars 9-12: fuller
pad.set(volume=0.18)
pad.hold(Sa.add(-12), Duration.WHOLE * 4, velocity=60)
pad.hold(Pa.add(-12), Duration.WHOLE * 4, velocity=50)
pad.add(Ga, Duration.WHOLE, velocity=55)
pad.add(Re, Duration.WHOLE, velocity=50)
pad.add(Ga, Duration.WHOLE, velocity=55)
pad.add(Sa, Duration.WHOLE, velocity=60)
# Bars 13-16: biggest
pad.set(volume=0.22)
pad.hold(Sa.add(-12), Duration.WHOLE * 4, velocity=65)
pad.hold(Pa.add(-12), Duration.WHOLE * 4, velocity=55)
pad.hold(Ga, Duration.WHOLE * 2, velocity=50)
pad.add(Ma, Duration.WHOLE, velocity=55)
pad.add(Ga, Duration.WHOLE, velocity=50)
pad.add(Re, Duration.WHOLE, velocity=55)
pad.add(Sa, Duration.WHOLE, velocity=60)
# ── HI-HAT TEXTURE — 16th note shimmer ─────────────────────────
hats = score.part("hats", synth="noise", envelope="staccato", volume=0.0,
lowpass=8000, reverb=0.15)
# Silent for 4 bars
for _ in range(4):
hats.rest(Duration.WHOLE)
# Bars 5-16: subtle 16th note texture with accents
hats.set(volume=0.04)
for _ in range(12):
for beat in range(4):
hats.add("C5", Duration.SIXTEENTH, velocity=90)
hats.set(volume=0.02)
hats.add("C5", Duration.SIXTEENTH, velocity=60)
hats.add("C5", Duration.SIXTEENTH, velocity=55)
hats.set(volume=0.04)
hats.add("C5", Duration.SIXTEENTH, velocity=75)
# ── TAMBURA — subtle drone, not as prominent as raga midnight ───
tambura = score.part("tambura", synth="sine", envelope="pad", volume=0.2,
reverb=0.8, reverb_type="taj_mahal",
chorus=0.3, chorus_rate=0.08, chorus_depth=0.008,
lowpass=1000, pan=-0.3)
for _ in range(16):
tambura.add(Sa.add(-24), Duration.HALF)
tambura.add(Pa.add(-24), Duration.HALF)
# ═════════════════════════════════════════════════════════════════
import sys
print(f"Key: {key}")
print(f"Temperament: shruti / just intonation")
print(f"Parts: {list(score.parts.keys())}")
print(f"Duration: {score.duration_ms / 1000:.1f}s | {score.measures} measures")
if "--live" in sys.argv:
print("Playing MONSOON BASS (live engine)...")
from pytheory_live.live import LiveEngine
engine = LiveEngine(buffer_size=1024)
engine.play_score(score)
else:
print("Playing MONSOON BASS...")
play_score(score)