// Romance Opus 16 - No. 1 — Pyotr Ilyich Tchaikovsky
// 60 bpm, 2/4, key Cb major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: Transcription provider: pdmx. https://musescore.com/score/5377856; license: https://creativecommons.org/publicdomain/zero/1.0/
// note: Full arrangement: all 92 bars on a 16-step grid, each part at one level. Source detail keeps the original performance.
setcpm(60/2)

// Notation: c3@3 lasts 3 steps · ~ is a rest · [c3,e3] is a chord · "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.

// chords · piano
const piano = note(`<
  A@2 B@2 C D@2 E@3 F G H D@2 E@3 F I A@2 B@2 C D@2 J@2 K L M N O P Q E@3 F G H D@2 E@3 F I A@2 B@2 C D@2 J@2 K L M N O
  P Q R@2 S T U V W X Y@2 Z AA ~@2 AB AC A@2 B@2 C AD@2 AE@4
>`.pickRestart({
  A: "~@3 ab3 ~@3 b3, b3@4 ~ [ab4,b4]@2 ~, ~ [eb4,ab4]@2 ~ e4@2 [ab3,eb4]@2, ~ [ab2,eb3] ~@2", // Abm Ab5
  B: "~@3 db4 ~@3 b3, [ab3,d4]@4 [c4,e4]@3 ~, ~ [ab4,bb4]@2 ~@2 ab4@2 ~, ~ [ab2,e3] ~ [ab3,eb4]", // Abdim C Absus2 Dbm Ab5
  C: "~@3 [b3,ab4] ~@3 b4, [e3,bb3] [ab2,eb3] e4 [ab3,eb4], ~ [db4,g4]@2 ~ db4@4, ~@5 [g4,bb4]@2 ~", // E Edim Ab5 Dbdim Gm
  D: "~@3 ab3 ~@3 b3, b3@4 ~ [ab4,b4]@2 ~, ~ [eb4,ab4]@2 ~ eb4@4, ~ [ab2,eb3] ~ [eb3,ab3]", // Abm Ab5
  E: "~@3 eb4 ~@3 b3, b3 eb4, ~ [ab4,eb5]@2 ~@2 [ab4,b4]@2 ~, ~ [ab2,eb3] ~ [eb3,ab3]", // Ab5 Abm Ab5
  F: "~@3 e4 ~@3 db4, bb3@4 ~ [ab4,db5]@2 ~, ~ [ab4,e5]@2 ~ e4@4, ~ [db3,e3,ab3] ~ [ab3,bb3]", // Db5 Dbm Absus2
  G: "~@3 eb4 ~@3 b3, b3 eb4, ~ [ab4,eb5]@2 ~@2 [ab4,b4]@2 ~, ~ [eb3,ab3] ~ [eb3,ab3]", // Ab5 Abm Ab5
  H: "~@3 db4 ~@3 db4, bb3@4 ~ [g4,b4]@2 ~, ~ [g4,eb5]@2 ~ eb4@4, ~ eb3 ~ eb3", // G Cm
  I: "~@3 eb4 ~@3 db4, b3 eb4, ~ [ab4,eb5]@2 ~@2 [g4,b4]@2 ~, ~ eb3 ~ eb3", // Ab5 G
  J: "~ d4 ~ bb4 ab4 ~@2 bb4, b2, b4 [gb3,eb4] e4@2, ~@2 db4 gb3, ~@5 gb4@2 ~", // Ebm
  K: "~ d4 ~ bb4 ab4 ~@2 gb4, b2, b4 [gb3,eb4] e4@2, ~@2 db4 bb3, ~@5 g4@2 ~", // Ebm
  L: "~ bb3 ~ g4 gb4 ~@2 e4, b2, ab4 [eb3,b3] db4@2, ~@2 bb3 gb3, ~@5 f4@2 ~", // Abm
  M: "~ c4 ~ e4 f4 ~@2 g4, bb2, [g3,eb4] db4@3, ~ eb3 bb3 eb3, ~@5 gb4@2 ~", // Cm
  N: "~ bb3 ~ g4 ab4 ~@2 b4, ab2, [ab3,ab4] [eb3,b3] eb4@2, ~@2 b3 ab3, ~@5 bb4@2 ~", // Ab Abm
  O: "ab4 g4 ~ bb4 b4 ~@2 d5, e3, [db4,db5] ab4@3, ~ ab3 e4 bb3, ~@5 db5@2 ~", // Db
  P: "~@7 bb4, eb3, eb5@5 b4@2 ~, b3 bb3 eb4 db4, ~ gb4@2 g4@5",
  Q: "ab5 ~@6 bb5, eb4, eb6@5 b5@2 ~, b4 bb4 eb5 db5, ~ gb5@2 g5@5",
  R: "~@3 eb5 ~@3 eb4, b4@4 ~ [ab4,eb5]@2 ~, ~ [ab5,eb6]@2 ~@3 ab3@2, ~ ab4 b3@2", // Ab5
  S: "~@3 eb5 ~@3 eb4, c5@4 ~ [ab4,eb5]@2 ~, ~ [ab5,eb6]@2 ~@3 [gb3,ab3]@2, ~ [gb4,ab4] c4@2", // Ab5 Gbsus2
  T: "~@3 db5 ~@3 db4, db5 [e4,ab4] db4 [e3,ab3], ~ [ab5,db6]@2 ~@2 [ab4,db5]@2 ~", // E Db5
  U: "~@3 b4 ~@3 b3, eb5@4 ~ [ab4,b4]@2 ~, ~ [ab5,b5]@2 ~@3 [eb3,ab3]@2, ~ [eb4,ab4] eb4@2", // Abm Ab5
  V: "~@3 db5 ~@3 db4, eb5@4 ~ g4@2 ~, ~ g5@2 ~@3 [eb3,bb3]@2, ~ [eb4,bb4] eb4@2", // Eb5
  W: "~@3 b4 ~@3 ab4, eb5@4 ~ eb5@2 ~, ~ ab5@2 ~@5, ~ ab4 b4 eb4",
  X: "~@3 eb4 ~@3 b3, ab4 b3 eb4 ab3, ~ b4@2 ~@2 ab4@2 ~",
  Y: "~@3 ab3 ~@3 ab3, gb3!2, ~ [c4,ab4]@2 ~@2 [c4,ab4]@2 ~, ~ [gb2,ab2] ~ [gb2,ab2]", // Fm Gbsus2
  Z: "~@3 ab3 ~@3 ab3, e3!2, ~ [b3,ab4]@2 ~@2 [b3,ab4]@2 ~, ~ [e2,ab2] ~ [e2,ab2]", // E
  AA: "~@3 b3 ~@3 b3, d4!2, ~ [e4,ab4]@2 ~@2 [e4,ab4]@2 ~, ~ [d3,e3] ~ [d3,e3]", // E Dsus2
  AB: "~@3 b3 ~@3 eb3, eb4@4 ~ [b3,eb4]@2 ~, ~ [ab4,b4]@2 ~@3 eb2@2, ~ eb3 ab3@2", // B Abm
  AC: "~@3 db4 ~@3 g3, eb4 bb3, ~ [ab4,bb4]@2 ~@2 [db4,eb4]@2 ~, ~ eb3 ~ eb2", // Absus2 Dbsus2
  AD: "~@7 [ab4,b4], ab3@2 e4 [ab3,eb4], ~ b3@2 ab4@2 b3@2 ~, ~ [ab2,eb3] ~@2", // Abm Ab5
  AE: "[~@12 [ab5,b5,eb6]@19 ~, ab3@2 e4 [ab3,eb4] e5 [ab4,eb5] ~@10, ~@2 b3@4 ab4@4 b4@4 ab5@4 b5@4 ab6@39 ~@3, ~ [ab2,eb3] ~@14]/4", // Abm Ab5
})).s("gm_piano").gain(0.15)

stack(piano)