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Add Glass and Silk (sine+triangle waltz) to song player — #18

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Pure sine and triangle only. Ab major waltz at 72bpm. Cathedral
and Taj Mahal reverb. Triangle legato melody with glide.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kenneth Reitz
2026-03-25 22:32:50 -04:00
parent 0e93e45853
commit f9af708f0a
1 changed files with 68 additions and 1 deletions
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examples/song.py
+68 -1
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@@ -859,6 +859,72 @@ def neon_grid():
play_song(score)
def glass_and_silk():
"""Pure sine and triangle — smooth shapes in a stereo cathedral."""
print(" Glass and Silk in Ab major")
print(" sine + triangle only | waltz 72bpm | cathedral + Taj Mahal reverb")
score = Score("3/4", bpm=72, swing=0.2)
score.drums("waltz", repeats=16)
sub = score.part("sub", synth="sine", envelope="pad",
volume=0.3, pan=0.0, lowpass=120)
voice = score.part("voice", synth="triangle", envelope="strings",
volume=0.45, pan=0.2, legato=True, glide=0.07,
reverb=0.5, reverb_type="cathedral",
delay=0.2, delay_time=0.56, delay_feedback=0.4,
humanize=0.3)
pad = score.part("pad", synth="sine", envelope="pad",
volume=0.2, pan=0.0, detune=10, spread=0.6,
reverb=0.6, reverb_type="taj_mahal",
chorus=0.2, chorus_rate=0.3)
counter = score.part("counter", synth="triangle", envelope="strings",
volume=0.2, pan=-0.5,
reverb=0.4, reverb_type="plate",
delay=0.15, delay_time=0.83, delay_feedback=0.35,
humanize=0.25)
chords = [Chord.from_symbol(s) for s in ["Ab", "Fm", "Db", "Eb"]]
for c in chords * 2:
for _ in range(3):
pad.add(c, Duration.DOTTED_HALF)
for n in (["Ab2"] * 9 + ["F2"] * 9 + ["Db2"] * 9 + ["Eb2"] * 9) * 2:
sub.add(n, Duration.QUARTER)
for n, v, d in [
("Ab4", 60, 3), ("C5", 70, 1.5), ("Eb5", 75, 1.5),
("Ab5", 85, 4.5), (None, 0, 1.5),
("F5", 75, 1.5), ("Ab5", 80, 1.5), ("C6", 90, 3),
("Bb5", 80, 1.5), ("Ab5", 70, 1.5), (None, 0, 3),
("Db5", 70, 1.5), ("Eb5", 80, 1.5), ("Ab5", 95, 3),
("Bb5", 100, 3), ("C6", 105, 4.5), (None, 0, 1.5),
("Bb5", 85, 1.5), ("Ab5", 75, 1.5), ("Eb5", 70, 3),
("C5", 60, 3), ("Ab4", 55, 6), (None, 0, 3),
("Eb5", 65, 3), ("Ab5", 80, 3), ("C6", 90, 4.5), (None, 0, 1.5),
("Bb5", 85, 1.5), ("Ab5", 75, 1.5), ("F5", 70, 3),
("Eb5", 65, 1.5), ("Db5", 60, 1.5), (None, 0, 3),
("Eb5", 70, 1.5), ("F5", 80, 1.5), ("Ab5", 90, 3),
("Bb5", 95, 3), ("Ab5", 85, 3),
("Eb5", 70, 3), ("Ab4", 55, 9),
]:
voice.rest(d) if n is None else voice.add(n, d, velocity=v)
for _ in range(24):
counter.rest(Duration.QUARTER)
for n, v, d in [
(None, 0, 3), ("C6", 55, 3), ("Eb6", 60, 4.5), (None, 0, 1.5),
("Db6", 50, 3), ("C6", 45, 3), (None, 0, 6),
("Eb6", 55, 4.5), ("Db6", 50, 1.5), ("C6", 45, 3),
("Ab5", 40, 6), (None, 0, 3),
("Bb5", 50, 3), ("C6", 55, 4.5), (None, 0, 1.5),
("Ab5", 45, 9),
]:
counter.rest(d) if n is None else counter.add(n, d, velocity=v)
play_song(score)
SONGS = {
"1": ("Bossa Nova in A minor", bossa_nova_girl),
"2": ("Bebop in Bb major", bebop_in_bb),
@@ -877,6 +943,7 @@ SONGS = {
"15": ("Liquid DnB in A minor", drum_and_bass),
"16": ("Late Night Texts (Drake-style)", drake_vibes),
"17": ("Neon Grid (Stereo Acid)", neon_grid),
"18": ("Glass and Silk (Sine+Triangle)", glass_and_silk),
}
if __name__ == "__main__":
@@ -890,7 +957,7 @@ if __name__ == "__main__":
print(f" {key:>2}. {name}")
print()
choice = input(" Pick a song (1-17, or 'all'): ").strip()
choice = input(" Pick a song (1-18, or 'all'): ").strip()
print()
if choice == "all":