// Contrapunctus 3 from the Art of the Fugue — J. S. Bach
// 120 bpm, 4/4, key F major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: Transcription provider: pdmx. https://musescore.com/score/4303216; license: https://creativecommons.org/publicdomain/zero/1.0/
// note: Full arrangement: all 72 bars on a 16-step grid, each part at one level. Source detail keeps the original performance.
setcpm(120/4)

// Notation: c3@3 lasts 3 steps · ~ is a rest · [...]/2 spreads a riff over 2 bars.
// A part's distinct bars are riffs (A, B, C...) played in order: edit a riff to change every repeat.

// other · violin
const violin = note(`<
  ~@8 A B C D E F@2 G@3 H I@2 J@4 K L M@2 N ~@12 O B C P Q@2 R S@2 T@4 ~@2 U V W X E Y Z AA AB AC AD@2 AE@3
>`.pickRestart({
  A: "d5 a4", B: "c5 e5", C: "f5@2 e5 d5", D: "db5@5 a4 b4 db5", E: "d5@5 d5 e5 f5",
  F: "[g5 b4 db5 d5 e5@2 d5@3 db5 c5@4 b4 bb4]/2", G: "[a4 ab4 a4 b4 c5@2 db5@4 d5 e5 f5@2 e5@3 a4 b4 db5 d5@3 e5]/3",
  H: "db5@2 f5@2 d5@3 e5", I: "[a4@2 d5@4 db5 c5@2 b4 eb5@2 c5@3 d5]/2",
  J: "[g4@2 c5@4 b4 bb4@2 a4 a5@4 d5@3 e5 f5@3 g5 a5@3 g5 bb5@4 a5 g5]/4", K: "f5@5 e5 gb5 g5",
  L: "a5@2 d5@3 g5 db5 d5", M: "[e5 f5 g5 e5 f5@5 f5 e5 d5 c5@3 d5]/2", N: "e5 ~@3", O: "e5 a4", P: "c5@5 a4 b4 db5",
  Q: "[d5 c5 b4 a4 b4@2 c5@3 b4 c5 d5 e5 d5 c5 bb4]/2", R: "a4@2 bb4@3 a4 bb4 c5",
  S: "[d5 c5 bb4 ab4 g4@5 gb4 g4 a4 bb4 a4 bb4 c5]/2",
  T: "[d5 db5 d5 e5 f5@2 gb5@4 g5 a5 bb5@2 a5@3 d5 e5 gb5 g5@5 gb5 g5 a5@2 gb5 g5@2]/4", U: "d5@4 a4@3 b4",
  V: "c5@3 d5 e5@3 d5", W: "f5@5 e5@2 d5", X: "db5@2 c5@3 a4 b4 db5", Y: "g5@3 gb5 g5@3 ab5", Z: "a5@5 a5 g5 f5",
  AA: "g5@2 f5 e5 d5 db5 d5 e5", AB: "f5 g5 f5 e5 f5 g5 a5@2", AC: "c5@5 gb4 g4 a4",
  AD: "[bb4@4 a4@5 gb4 g4@3 g4 gb4 e4]/2", AE: "[gb4 g4 a4@2 d4@7 db4 d4@12]/3",
})).s("gm_violin").gain(0.3)

// other · viola
const viola = note(`<
  A B C D E F@3 G H I J K L M@2 N O ~@10 P@3 Q R S T@3 U V@2 W@2 X Y Z O AA AB AC AD AE AF@2 AG AH AI@2 AJ AK AL AM ~ AN
  AO AP AQ AR AS AT@2 AU@2
>`.pickRestart({
  A: "d4 a3", B: "c4 e4", C: "f4@2 e4 d4", D: "db4@5 a3 b3 db4", E: "d4@2 c4@4 b3 bb3",
  F: "[a3 ab3 a3 b3 c4@2 db4@4 d4 e4 f4@2 e4@3 a3 b3 db4 d4 db4 d4 e4]/3", G: "f4 e4 d4 db4 d4@2 d3@2",
  H: "a3 b3 c4@3 e4 d4 c4", I: "b3!2 c3 d3 e3 gb3 ab3 e3", J: "a3 g3 f3 e3", K: "d3 d4 e4 gb4 g4@2 f4@2",
  L: "e4 d4 db4 d4", M: "[e4@4 d4@6 c4 b3 a3@2 ~@2]/2", N: "~@2 d4@3 b3 db4 e4", O: "a3 ~@3",
  P: "[~@2 e4@4 a3@3 b3 c4@3 d4 e4@3 d4 f4@4 e4 d4]/3", Q: "c4@5 b3 db4 d4", R: "e4@5 a3 b3 c4", S: "d4@5 g3 a3 bb3",
  T: "[c4 bb3 c4@4 f3@3 g3 a3@3 bb3 c4@3 bb3 d4@4 c4 bb3]/3", U: "a3@5 g3 a3 b3",
  V: "[c4 g3 c4@4 b3 bb3@2 a3 f4@2 d4@3 e4]/2", W: "[a3@2 d4@4 db4 c4@2 b3 g4@2 e4@3 gb4]/2", X: "b3@3 db4 d4@3 d4",
  Y: "c4 b3 c4 a3 b3@3 c4", Z: "d4 c4@2 b3@2 a3@2 ab3", AA: "~ d3 e3 gb3 g3@2 a3 f3", AB: "g3 f4 e4 d4 c4 c3 d3 e3",
  AC: "f3@2 g3 eb3 f3 eb4 d4 c4", AD: "bb3!2 c3 d3 eb3 f3 eb3 d3", AE: "c3 d3 e3 gb3 g3@3 eb3",
  AF: "[d3@2 ~ g3 f3 bb3 a3@4 g3@3 e3 gb3 a3]/2", AG: "d3 gb3 g3 a3 bb3 ~@3", AH: "~ d4 db4 c4@2 c4 b3 bb3",
  AI: "[a3 ab3 a3 b3 c4@2 db4@4 d4 e4 f4@2 e4@2]/2", AJ: "~ a3 b3 db4 d4 a3 d3@2", AK: "e3 eb3 e3 gb3 g3@3 ab3",
  AL: "a3 ~@2 e4", AM: "e4 ~@3", AN: "a3 d3", AO: "f3 a3", AP: "bb3@2 a3 g3", AQ: "f3@5 e3 gb3 g3",
  AR: "a3@5 d3 e3 gb3", AS: "g3@5 gb3 g3 a3", AT: "[bb3@2 a3 g3 a3@9 a3 g3 gb3]/2", AU: "[g3@9 gb3 g3 e3 gb3@4]/2",
})).s("gm_viola").gain(0.3)

// other · cello · "Violoncello"
const cello = note(`<
  ~@14 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z F AA AB@3 AC ~@4 AD AE AF AG AH AI@2 AJ AK AL AM AN AO AP@8
  AQ
>`.pickRestart({
  A: "a3 d3", B: "f3 a3", C: "bb3@2 a3 g3", D: "f3@5 e3 f3 g3", E: "a3 a2 ~ a2 bb2 a2 b2 db3",
  F: "d3 d2 ~ d3 eb3 d3 e3 gb3", G: "g3 g2 ~ g2 ab2 g2 a2 b2", H: "c3 c2 ~ c3 db3 c3 d3 e3",
  I: "f3 f2 ~ f2 gb2 g2 ~ g3", J: "f3 e3 d3 d4 a3 bb3 a3 g3", K: "f3 e3 d3@3 g3 db3@2", L: "d3@2 ~ a2 bb2 bb3 a3 g3",
  M: "gb3@6 e3 gb3 g3@2 f3@2 e3@2 d3@2", N: "db3@4 db4@2 b3 db4 d4@2 c4@2 b3@2 a3@2", O: "ab3@4 a3@2 a2 b2",
  P: "c3@2 ~ a2 e3 f3 e3 d3", Q: "c3 b2 a2@3 d3 ab2@2", R: "a2 c3 d3 e3 f3@2 e3 d3", S: "db3 a2 b2 db3 d3 e3 d3 c3",
  T: "b2 g2 a2 b2 c3 d3 c3 bb2", U: "a2 g2 a2 f2 bb2 a2 bb2 c3", V: "d3@3 e3 f3@3 d3", W: "g3@3 f3 e3 d3 e3 c3",
  X: "f3 e3 d3@2", Y: "c3@2 ~ c3 db3 c3 d3 e3", Z: "f3 f2 ~ f3 bb2 a2 b2 db3", AA: "g3 g2 ~ g3 c3 b2 db3 eb3",
  AB: "[e3@3 e3 f3 g3 a3@5 a3 g3 gb3 e3@3 f3 e3 d3 c3@2 e3@2]/3", AC: "a2 ~@3", AD: "c3 g2", AE: "bb2 d3",
  AF: "eb3@2 d3 c3", AG: "bb2@5 a2 b2 db3", AH: "d3@2 e3 gb3 g3@2 ~ g3",
  AI: "[d3@2 ~ d3 c3 d3 e3@3 g3 f3 e3 d3@2 db3@2]/2", AJ: "d3@5 c3@2 b2", AK: "a2@4 g2 a2 bb2@2",
  AL: "a2 d3 e3 f3 g3@2 ab3@2", AM: "a3 bb3 a3 g3 gb3@2 g3 a3", AN: "bb3 c4 bb3 a3 g3 f3 e3 d3",
  AO: "db3@2 c3@4 b2 bb2",
  AP: "[a2 ab2 a2 b2 c3@2 db3@4 d3 e3 f3@2 e3@3 a2 b2 db3 d3@5 c3 bb2 a2 bb2@5 a2 bb2 g2 d3@25 a2 bb2 g2]/8", AQ: "d2",
})).s("gm_cello").gain(0.3)

stack(violin, viola, cello)