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Epic Bhairav: musical polyrhythm section, fix reverb levels

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Polyrhythm section uses musical phrases (ti-ra-ki-ta patterns)
in 5-groups, 7-groups, and 9-groups rather than mechanical grid
overlays. Reverb pulled back to 0.4 across the song.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kenneth Reitz
2026-03-27 17:12:31 -04:00
parent d2d5115c8a
commit bf8d4b9a77
1 changed files with 60 additions and 16 deletions
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examples/songs.py
+60 -16
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@@ -1315,13 +1315,13 @@ def journey():
# ── Drone — runs the entire piece ──
tanpura = score.part("tanpura", synth="strings_synth", envelope="pad",
detune=3, lowpass=1000, volume=0.12,
reverb=0.5, reverb_type=REV)
reverb=0.6, reverb_type=REV)
for _ in range(40):
tanpura.add("A2", Duration.WHOLE)
# ── Bars 1-8: Piano alone, then cello ──
piano = score.part("piano", instrument="piano", volume=0.35,
reverb=0.35, reverb_type=REV)
reverb=0.6, reverb_type=REV)
for notes in [
["A2","E3","A3","C4","E4","C4","A3","E3"],
["F2","C3","F3","A3","C4","A3","F3","C3"],
@@ -1336,7 +1336,7 @@ def journey():
piano.add(n, Duration.EIGHTH, velocity=68)
cello = score.part("cello", instrument="cello", volume=0.2,
reverb=0.4, reverb_type=REV)
reverb=0.55, reverb_type=REV)
cello.rest(Duration.WHOLE)
for note, dur, vel in [
("A3", 4.0, 55), ("C4", 4.0, 58),
@@ -1347,11 +1347,11 @@ def journey():
# ── Bars 9-16: Harp + oboe + flute + djembe ──
harp = score.part("harp", instrument="harp", volume=0.28,
reverb=0.45, reverb_type=REV)
reverb=0.6, reverb_type=REV)
oboe = score.part("oboe", instrument="oboe", volume=0.22,
reverb=0.4, reverb_type=REV)
reverb=0.55, reverb_type=REV)
flute = score.part("flute", instrument="flute", volume=0.18,
reverb=0.4, reverb_type=REV)
reverb=0.55, reverb_type=REV)
for _ in range(8):
harp.rest(Duration.WHOLE)
for notes in [
@@ -1383,7 +1383,7 @@ def journey():
# ── Bars 15-20: Sitar + tabla ──
sitar = score.part("sitar", instrument="sitar", volume=0.2,
reverb=0.35, reverb_type=REV)
reverb=0.6, reverb_type=REV)
for _ in range(14):
sitar.rest(Duration.WHOLE)
for note, dur, vel in [
@@ -1406,7 +1406,7 @@ def journey():
# Total bars before EDM: 8 piano + 6 harp + 6 djembe + 4 tabla + 9 solo = 33
edm_start = 33
pad = score.part("pad", instrument="synth_pad", volume=0.18,
reverb=0.45, reverb_type=REV,
reverb=0.6, reverb_type=REV,
sidechain=0.6, sidechain_release=0.15)
for _ in range(edm_start):
pad.rest(Duration.WHOLE)
@@ -1575,12 +1575,12 @@ def epic_bhairav():
# Tanpura
tanpura = score.part("tanpura", synth="strings_synth", envelope="pad",
detune=3, lowpass=900, volume=0.14, reverb=0.5, reverb_type=REV)
detune=3, lowpass=900, volume=0.14, reverb=0.4, reverb_type=REV)
tanpura_pa = score.part("tanpura_pa", synth="strings_synth", envelope="pad",
detune=3, lowpass=1200, volume=0.1, reverb=0.5, reverb_type=REV)
detune=3, lowpass=1200, volume=0.1, reverb=0.4, reverb_type=REV)
sa = Tone("Sa", octave=3, system=shruti)
pa = Tone("Pa", octave=3, system=shruti)
for _ in range(30):
for _ in range(34):
tanpura.add(sa, Duration.WHOLE)
tanpura_pa.add(pa, Duration.WHOLE)
@@ -1599,7 +1599,7 @@ def epic_bhairav():
# Choir — bar 3
choir = score.part("choir", synth="vocal_synth", envelope="pad",
detune=8, spread=0.4, reverb=0.5, reverb_type=REV, volume=0.2)
detune=8, spread=0.4, reverb=0.4, reverb_type=REV, volume=0.2)
for _ in range(2):
choir.rest(Duration.WHOLE)
for tone, dur, lyric, vel in [
@@ -1610,7 +1610,7 @@ def epic_bhairav():
# Bansuri — bar 5
bansuri = score.part("bansuri", instrument="flute", volume=0.22,
reverb=0.45, reverb_type=REV)
reverb=0.4, reverb_type=REV)
for _ in range(4):
bansuri.rest(Duration.WHOLE)
for tone, dur, vel in [
@@ -1630,7 +1630,7 @@ def epic_bhairav():
cello.add(Tone(name, octave=2, system=shruti), dur, velocity=vel)
# Sitar — bar 9
sitar = score.part("sitar", instrument="sitar", volume=0.25, reverb=0.35, reverb_type=REV)
sitar = score.part("sitar", instrument="sitar", volume=0.25, reverb=0.4, reverb_type=REV)
for _ in range(8):
sitar.rest(Duration.WHOLE)
for tone, dur, vel in [
@@ -1646,7 +1646,7 @@ def epic_bhairav():
# Strings — bar 13
strings = score.part("strings", instrument="string_ensemble", volume=0.18,
reverb=0.45, reverb_type=REV)
reverb=0.4, reverb_type=REV)
for _ in range(12):
strings.rest(Duration.WHOLE)
for name, dur, vel in [("Sa", 4.0, 58), ("Ma", 4.0, 62), ("Pa", 4.0, 68), ("Sa", 4.0, 72)]:
@@ -1706,6 +1706,50 @@ def epic_bhairav():
_Hit(DH, 7.0, 120),
])
score.add_pattern(p_f3, repeats=1)
# Part 3.5: polyrhythm — musical phrases that create cross-rhythm
T5 = 4.0 / 5.0
T7 = 4.0 / 7.0
p_poly = Pattern(name="poly", time_signature="4/4", beats=16.0, hits=[
# Bar 1: dayan plays 5-groups while bayan holds the 4
_Hit(DH, 0.0, 92), _Hit(GE, 1.0, 78),
_Hit(NA, 0.0, 72), _Hit(TT, 0.0 + T5, 42), _Hit(NA, 0.0 + 2*T5, 68),
_Hit(TT, 0.0 + 3*T5, 40), _Hit(NA, 0.0 + 4*T5, 75),
_Hit(DH, 2.0, 90), _Hit(GE, 3.0, 78),
_Hit(NA, 2.0, 70), _Hit(TT, 2.0 + T5, 40), _Hit(NA, 2.0 + 2*T5, 72),
_Hit(TT, 2.0 + 3*T5, 42), _Hit(DH, 2.0 + 4*T5, 85),
# Bar 2: 7-group phrase — "ti ra ki ta ta ka dha"
_Hit(GB, 4.0, 95),
_Hit(TT, 4.0 + T7, 48), _Hit(TT, 4.0 + 2*T7, 42),
_Hit(KE, 4.0 + 3*T7, 52), _Hit(NA, 4.0 + 4*T7, 68),
_Hit(NA, 4.0 + 5*T7, 62), _Hit(KE, 4.0 + 6*T7, 55),
_Hit(DH, 4.0 + 7*T7, 88),
_Hit(GB, 6.0, 92),
_Hit(TT, 6.0 + T7, 45), _Hit(TT, 6.0 + 2*T7, 40),
_Hit(KE, 6.0 + 3*T7, 50), _Hit(NA, 6.0 + 4*T7, 72),
_Hit(NA, 6.0 + 5*T7, 65), _Hit(DH, 6.0 + 6*T7, 90),
# Bar 3: 9-group with accented phrase shape
_Hit(DH, 8.0, 105),
_Hit(NA, 8.0 + T9, 60), _Hit(TT, 8.0 + 2*T9, 42),
_Hit(KE, 8.0 + 3*T9, 48), _Hit(DH, 8.0 + 4*T9, 82),
_Hit(TT, 8.0 + 5*T9, 40), _Hit(NA, 8.0 + 6*T9, 65),
_Hit(TT, 8.0 + 7*T9, 38), _Hit(DH, 8.0 + 8*T9, 88),
_Hit(GE, 10.0, 85),
_Hit(TT, 10.0 + T9, 42), _Hit(NA, 10.0 + 2*T9, 62),
_Hit(KE, 10.0 + 3*T9, 48), _Hit(DH, 10.0 + 4*T9, 85),
_Hit(NA, 10.0 + 5*T9, 60), _Hit(TT, 10.0 + 6*T9, 40),
_Hit(KE, 10.0 + 7*T9, 45), _Hit(GB, 10.0 + 8*T9, 95),
# Bar 4: everything converges on sam
_Hit(DH, 12.0, 115),
_Hit(TT, 12.25, 45), _Hit(NA, 12.5, 72), _Hit(TT, 12.75, 42),
_Hit(DH, 13.0, 108), _Hit(TT, 13.25, 40), _Hit(KE, 13.5, 50),
_Hit(NA, 13.75, 70),
_Hit(DH, 14.0, 112), _Hit(NA, 14.25, 68),
_Hit(TT, 14.5, 48), _Hit(TT, 14.625, 42), _Hit(TT, 14.75, 45),
_Hit(DH, 15.0, 120), _Hit(GB, 15.5, 112),
])
score.add_pattern(p_poly, repeats=1)
p_f4 = Pattern(name="f4", time_signature="4/4", beats=12.0, hits=[
*[_Hit(TT, 0.0 + i * T3, 38 + i * 2) for i in range(12)],
_Hit(DH, 1.0, 118), _Hit(GB, 1.5, 110),
@@ -1725,7 +1769,7 @@ def epic_bhairav():
_Hit(GB, 11.875, 127),
])
score.add_pattern(p_f4, repeats=1)
score.set_drum_effects(reverb=0.35, reverb_type=REV)
score.set_drum_effects(reverb=0.4, reverb_type=REV)
play_song(score, "Epic Bhairav — Orchestra + Choir + Tabla (22-Shruti JI)")