// The Art of Fugue Contrapunctus II String Quartet — J. S. Bach
// 120 bpm, 2/2, key F major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: Transcription provider: pdmx. https://musescore.com/score/4297356; license: https://creativecommons.org/publicdomain/zero/1.0/
// note: Full arrangement: all 84 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 · "a, b" plays two voices at once · [...]/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(`<
  ~@12 A B C D E@2 F@3 G H ~@2 A B C D I@2 J ~ K@2 L M N O ~ P@4 Q R S T U@2 V ~@3 W X@4 Y Z AA@2 AB@2 AC AD@3 AE AF@3
  AG@5 AH AI AJ AK AL@2
>`.pickRestart({
  A: "a4 d5", B: "c5 a4", C: "ab4@2 a4 b4", D: "c5@11 d5 c5@3 b4", E: "a4/2",
  F: "[d4@35 db4 d4@3 f4 e4@3 d4 ab4@3 a4]/3", G: "b4@3 c5 d5@3 f4@4 e4 db4@3 d4, ~@12 d4 ~@3", H: "db4 ~@3",
  I: "[c5@4 a5@7 g5 f5@3 e5@4 f5 e5@3 d5@4 e5 d5@3 db5]/2", J: "d5 ~",
  K: "[~@3 a5 ab5@3 a5 d5@4 g5@7 f5 e5@3 d5 e5@4 a5@4]/2", L: "d5 e5 e4 f4", M: "e4@4 e5@7 d5 c5@3 b4",
  N: "c5@3 d5 e5@7 f5 e5@3 d5", O: "a5 ~@3",
  P: "[~@3 e5 eb5@3 e5 a4@4 d5@7 c5 bb4@3 a4 bb4@11 a4 g4@3 f4 g4@11 f4 g4@3 a4 bb4@3 c5 d5@3 e5]/4", Q: "f5 c6",
  R: "a5 f5", S: "e5@2 f5 g5", T: "a5@11 bb5 a5@3 g5", U: "[gb5@8 g5@4 a5@7 d5 g5@3 f5 eb5@3 d5 c5@3 bb4]/2", V: "a4 ~",
  W: "~@3 g5 f5@3 eb5 d5@3 c5 bb4@3 a4",
  X: "[bb4@8 eb5@11 d5 db5@3 d5 g4@4 c5@8 bb4@4 a4@11 f5 g5@3 f5 e5@3 d5 db5@3 d5]/4",
  Y: "db5@3 a5 bb5@3 a5 g5@3 f5 e5@3 f5", Z: "g5@3 f5 e5@3 d5@4 e5 d5@3 db5",
  AA: "[d5@4 ~@8 bb4@7 bb4 a4@3 g4 f4@3 e4 d4@3 db4]/2", AB: "[d4@3 d5 e5@3 f5 g5@12 f5@3 e5 f5@4 a5@4]/2",
  AC: "d5@2 e5 gb5", AD: "[g5@12 d5@7 e5 d5@3 c5@4 d5 c5@3 bb4@4 bb4 a4@3 g4 f4@3 c5 bb4@3 a4]/3",
  AE: "ab4@6 ~ ab4 a4@6 ~ a4", AF: "[d5@3 e5 f5@4 e5@11 a5 ab5@3 a5 e5@3 gb5 g5@8 f5@8 e5@3 d5]/3",
  AG: "[db5@4 e5@4 a4@12 d4@8 g4@7 bb4 a4@3 g4@4 a4 g4@3 f4@4 g4 f4@3 e4@4 f4 e4@3 d4@4 b3 db4@3 e4 a3@3 g4 f4@3 e4]/5",
  AH: "d4 a4", AI: "f4 d4", AJ: "db4@2 d4 e4", AK: "f4@11 g4 f4@3 e4", AL: "d4/2",
})).s("gm_violin").gain(0.3)

// other · viola
const viola = note(`<
  ~@4 A B C D E F G H I J K L M@4 N O P Q@5 R S T U V W X Y@2 A B C Z AA AB AC@2 AD@2 AE@2 AF AG@3 AH AI AJ AK AL@2 AM
  AN AO AP AQ AR AS ~@2 AT@3 AU AV@2 AW AX AY AZ AQ BA BB BC BD@2
>`.pickRestart({
  A: "a3 d4", B: "c4 a3", C: "ab3@2 a3 b3", D: "c4@11 d4 c4@3 bb3", E: "a3@11 g4 f4@3 e4",
  F: "d4@3 c4 bb3@3 a3 bb3@3 a3 g3@3 f3", G: "e3@8 ~@3 a3 b3@3 db4", H: "d4@3 db4", I: "d4@6 ~ e4 f4@8",
  J: "e4 c4@2 a3", K: "b3@8 ~@3 e3 gb3@3 ab3", L: "a3@3 ab3",
  M: "[a3@4 b3@3 db4 d4@4 g3@7 g3 f3@3 e3 f3@4 gb3@7 d3 e3@3 gb3 g3@4 c3@7 a3 bb3@3 c3 d3@3 db3 d3@4]/4", N: "e3 ~@3",
  O: "~ ab3", P: "e3@4 ~@7 a3 b3@3 db4",
  Q: "[d4@4 c4@8 bb3@7 g3 f3@3 e3 a3@11 d4 db4@3 d4 ab3@4 b3@7 e3 a3@3 g3 f3@12 e3@4 ~@8]/5",
  R: "~@3 g4 f4@3 e4 eb4@4 e4@4", S: "a3@2 b3 db4", T: "d4 ~", U: "~@3 a3 b3@3 db4 d4@3 e4 f4@3 d4", V: "e4 e3 f3 g3",
  W: "a3 ~@3", X: "~@4 d4@7 c4 bb3@3 a3", Y: "[bb3@4 b3@4 db4@4 d4@7 c4 b3@3 a3 b3@4 e4@4]/2", Z: "c4@11 d4 c4@3 b3",
  AA: "a3@11 g3 f3@3 e3", AB: "f3 bb3 e3 a3", AC: "[d3@4 e3@3 f3 g3@3 a3 bb3@7 a3 g3@3 f3 e3@8]/2",
  AD: "[f3@4 ~@8 bb3@7 d4 c4@3 bb3 a3@3 g3 f3@3 e3]/2",
  AE: "[f3@3 f4 e4@3 f4 bb3@4 eb4@7 eb4 d4@3 c4 bb3@3 a3 g3@3 gb3]/2", AF: "g3@3 a3 bb3@8 a3@3 bb3",
  AG: "[c4@4 eb4@4 d4@12 d4@4 e4@4 f4@7 f4 eb4@3 d4 c4@3 bb3 a3@3 g3]/3", AH: "f3 ~@3", AI: "~ c3 d3 eb3",
  AJ: "f3 bb3@2 eb4", AK: "f4@8 ~@3 c4 bb3@3 a3", AL: "[g3@2 eb4@2 db4@2 d4@3 ~@7]/2", AM: "~ d4@2 db4", AN: "d4 e4",
  AO: "a3@4 b3@3 db4 d4@4 ~@4", AP: "~ e3 f3 g3", AQ: "a3 ~", AR: "~@3 a3 b3@3 db4 d4@4 gb3@4", AS: "g3 ~@3",
  AT: "[~ a3@2 d4@2 c4@2 a3@2 ab3 a3 b3]/3", AU: "c4@11 d4 db4@3 b3",
  AV: "[a3@8 bb3@11 bb3 a3@3 g3 f3@3 e3 d3@3 db3]/2", AW: "d3@4 e3@3 gb3 g3@3 f3 e3@3 d3", AX: "db3 d3", AY: "e3 f3",
  AZ: "e3@2 ~ a3", BA: "~@3 d3 e3@3 f3 g3@3 a3 g3@3 f3", BB: "e3@3 g3 f3@3 e3 d3@8", BC: "db3 d3@2 db3",
  BD: "[d3@4 e3@3 gb3 g3@11 gb3 g3@3 e3 gb3@8]/2",
})).s("gm_viola").gain(0.3)

// other · cello · "Violoncello"
const cello = note(`<
  A B C D E@2 F G@2 H@2 I J K@2 L M N O P Q@2 R S T U V@2 R ~ A B C D W X Y ~@13 Z AA@2 AB AC AD AE AF AG AH A B C D AD
  AI AJ AK AL AM AN@2 AO@2 AP AQ@4 AR AS AT AU AV
>`.pickRestart({
  A: "d3 a3", B: "f3 d3", C: "db3@2 d3 e3", D: "f3@11 g3 f3@3 e3",
  E: "[d3@3 e3 d3@3 c3@4 d3 c3@3 b2@4 a2 b2@3 c3 d3@3 e3 f3@3 d3]/2", F: "e3@3 f3 e3@3 d3 c3@3 b2 a2@3 ab2",
  G: "[a2@3 a3 ab3@3 a3 d3@4 g3@7 f3 e3@3 d3 db3@8]/2", H: "[d3@4 d2@4 g2@3 a2 bb2@7 bb2 a2@3 g2 f2@4 e2@4]/2",
  I: "d2@3 d3 e3@3 f3 g3@3 bb3 a3@3 g3", J: "f3@3 g3 f3@3 e3 d3@3 e3 f3@3 g3", K: "[a3@8 f3@11 f3 e3@3 d3 c3@4 b2@4]/2",
  L: "~@3 a2 b2@3 c3 d3@4 e3@4", M: "f3@11 e3 d3@3 db3", N: "d3@11 c3 bb2@3 a2", O: "bb2@11 a2 g2@3 gb2", P: "f2@7 f2",
  Q: "[e2@3 e3]/2", R: "a2 ~@3", S: "~@3 d3 e3@3 f3 g3@3 a3 g3@3 f3", T: "e3@3 bb3 a3@3 g3 f3@3 e3 d3@3 db3",
  U: "d3 f3 b2 e3", V: "[a2@8 d3@11 b2 e3@3 d3 c3@4 b2@4]/2", W: "d3 ~@3", X: "~@4 g3@7 f3 e3@3 d3", Y: "e3 ~",
  Z: "~@3 eb3 d3@3 c3 bb2@3 a2 g2@3 gb2", AA: "[g2@3 g3 gb3@3 g3 c3@16 f3@8]/2", AB: "d3 bb2", AC: "a2@2 bb2 c3",
  AD: "d3@11 eb3 d3@3 c3", AE: "bb2@3 bb3 a3@3 bb3 e3@4 gb3@4", AF: "g3@11 f3 e3@3 d3", AG: "bb3", AH: "a3 ~@3",
  AI: "bb2@11 c3 bb2@3 a2", AJ: "g2@3 d3 e3@3 gb3 g3@3 a3 g3@3 f3", AK: "e3 a3 d3 g3", AL: "db3 d3", AM: "e3 f3",
  AN: "[b2@2 c3@3 d3 e3@2]/2", AO: "[f3 d3 g3@3 db3 d3 a2]/2", AP: "bb2@3 g2",
  AQ: "[a2@43 bb2 a2@3 g2@4 a2 g2@3 f2@4 g2 f2@3 e2]/4", AR: "d2@4 ~@7 e2 f2@3 g2", AS: "a2@8 ~@3 bb2 a2@3 g2",
  AT: "a2@3 f2 e2@3 d2 g2@4 a2@4", AU: "bb2@3 c3 bb2@3 a2 g2@3 a2 bb2@3 g2", AV: "d3 d2",
})).s("gm_cello").gain(0.3)

stack(violin, viola, cello)