// autumn leaves — E.Clapton
// 120 bpm, 4/4, key G major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: metre changes (2/4 at bar 1, 4/4 at bar 2, 2/4 at bar 8, 4/4 at bar 9, ...) are rendered on a constant 4/4 grid of one bar per cycle
// note: Transcription provider: pdmx. https://musescore.com/score/5830250; license: https://creativecommons.org/publicdomain/zero/1.0/
// note: Full arrangement: all 100 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 · [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 E F G H I J K@2 L M N O P Q R S T U V W X Y E F G H I Z X Y AA AB AC AD AE AF AG AH AI AJ AK AL AM AN
  AO AP E F G H I J K@2 L M N O P Q R S T U V W X Y E F G H I Z X Y AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AQ
>`.pickRestart({
  A: "[~@4 [e4,g4]@2 [g4,b4]@4 [e4,g4]@2 [f#4,a4]@11 ~@5 d3@2 f#2@2, a2@6 e3@6 d3@15 ~@5]/2", // Em G Em F#m
  B: "[~@4 [d4,f#4]@2 [f#4,a4]@4 [d4,f#4]@2 [e4,g4]@11 ~@5 g2@2 e2@2, g2@6 d3@6 c3@15 ~@5]/2", // D F#m D Em
  C: "~@2 [a3,c4] [c4,e4]@2 [a3,c4] [b2,b3,d#4]@2, f#2@3 c3@3 ~@2", D: "e3 b2 g3 f#3 e3 d#3 d3 b2",
  E: "c3@2 [c4,e4] ~@2 [c4,e4] [g3,e4,g4]@2, ~ c3 e3 ~, ~@3 [e4,g4]@2 ~@3", F: "f#3 d3 c#3 c3, [d4,f#4] ~",
  G: "g2@2 [b3,d4] ~@2 [b3,d4] [f#3,d4,f#4]@2, ~ b2 d3 ~, ~@3 [d4,f#4]@2 ~@3", H: "g3 e3 c3 e3, [c4,e4] ~",
  I: "f3@2 [a3,c4] ~@2 [a3,c4] [a2,c4,f4]@2, ~ c3 a2 ~, ~@3 [c4,f4]@2 ~@3", // Am F F5
  J: "[b2,d#4,f#4]@2 ~@2 e2@4 e4@3 d#4@2 e4@3", // B
  K: "[[b2,f#4]@3 b3 ~@2 e3 f#3 ~@4 e4@2 e3 f#3, ~@3 d#3@3 ~@2 b2@3 d#3@3 ~@2, ~@8 f#4@11 ~ f#4@4 ~@4 f#4@4]/2", // B5
  L: "e2@3 g2@3 a2 b2, g4 ~@3", M: "~@4 f#4@2 a2 b2, e2@3 g2@3 ~@2, ~ g4 ~ g4",
  N: "[d2,a4]@3 d4 ~@2 g2 a2, ~@3 f#2@3 ~@2, ~ f#4", O: "d3 d4 [b4,d5] [a4,c5]", P: "g2@3 b2@3 c3 d3, [g4,b4]@15 ~",
  Q: "g2 ~@3", R: "d#3@3 f#3@3 a3 c3", S: "b2@3 d#3@3 f#3 b2", T: "e3@3 g3@3 e3 b2", U: "g2@3 b2 e2@2 ~@2",
  V: "[b2,d#4,f#4]@15 ~", W: "[b1,b2,d#4,f#4,a4] ~", X: "~@2 e3 g3@2 e3 g3 b3", Y: "e4 ~", Z: "[b2,b3,d#4] ~@7",
  AA: "c3@3 e3@3 [g3,e4,g4,c5]@2", AB: "d3@3 f#3@3 [a3,f#4,a4,d5]@2", AC: "g2@3 b2@3 [d3,d4,g4]@2",
  AD: "e2@3 g2@3 [b2,e4,g4]@2", AE: "a2@3 c3@3 [e3,c4,a4]@2", AF: "b2@3 d#3@3 [f#3,d#4,a4]@2", AG: "e3@2 g#3 b2",
  AH: "[e2,e3]@3 [e2,e3]@2 [e2,e3]@3 [e2,e3]@8", AI: "c4@4 c4@2 ~ b3 c4@4 [g3,c4]@3 b3, c3@3 e3@3 ~@2",
  AJ: "c4@4 c4@2 ~ b3 c4@2 ~@4 f#4@2, d3@3 f#3@3 a3@2, ~@5 d4@2 ~",
  AK: "b3@4 b3@2 ~ a3 b3@4 [d3,b3]@3 a3, g2@3 b2@3 ~@2", AL: "b3@4 b3@2 ~ a3 b3@2 ~@4 b3@2, e2@3 g2@3 b2@2, ~@5 c4@2 ~",
  AM: "a3@4 a3@2 ~ g3 a3@4 [e3,a3]@3 g3, a2@3 c3@3 ~@2", AN: "b2@3 d#3@3 [f#3,b3]@2, f#3@11 ~@5",
  AO: "g4 f#4 e4 g4 f#4 e4 g4 e4, e3@3 g3@3 b2@2", AP: "g#4 f#4 e4 g#4 e3 d#3 d3 b2, [e2,b2,e3,g#3] ~",
  AQ: "g#4 f#4 e4 g#4 ~@4, [e2,b2,e3,g#3] ~", // E
})).s("gm_piano").gain(0.3)

// other · trombone · "Trombón"
const trombone = note(`<
  A B@2 C@2 D E F G H I@2 J K L ~ M ~ L ~ N O P Q R S T U V A W@2 X@2 Y Z V AA AB AC AD AE AF AG AH AI AJ AK AL AM T AN
  AO F G H I@2 J K L ~ M ~ L ~ N O P Q R S T U V A W@2 X@2 Y Z V AA AB AC AD AE AF AG AH AI AJ AK AL AM T AN AO AP
>`.pickRestart({
  A: "~@8 e3@3 f#3@2 g3@3", B: "[c4@24 d3@3 e3@2 f#3@3]/2", C: "[b3@24 c3@3 d3@2 e3@3]/2", D: "a3",
  E: "~@4 f#3 a3@2 d#3", F: "e3@4 e3 f#3 g3 e3", G: "c4@4 c4@3 b3 c4@3 b3 a3@2 g3@2", H: "f#3 d3 g3 d3 g#3 d3 a3 f#3",
  I: "[b3@12 c3 d3 e3 c3]/2", J: "a3@8 a3@3 g3 a3@2 g3@2", K: "f#3 b2 e3@2 ~@4", L: "~@2 g#3 a3@2 a3!3",
  M: "~@2 a#3 b3@2 b3!3", N: "~@2 [d3,a#3] b3@2 b3!3", O: "~ b3 a#3 b3", P: "c4!2 a3!2", Q: "f#3!2 c4!2",
  R: "b3!2 g3!2", S: "e3@4 e3@4 e3@3 f#3@2 g3@3", T: "a3@2 a3 g3", U: "f#3@2 ~@2 f#3 a3@2 d#3", V: "e3",
  W: "[e4@24 d3@3 e3@2 f#3@3]/2", X: "[d4@24 c3@3 d3@2 e3@3]/2", Y: "c4!2", Z: "b3@4 a#3 ~ a3 ~ g#3 ~ g3 ~ f#3 ~ f3 ~",
  AA: "~@2 e3@3 g3 b3@2", AB: "c4@4 c4@3 b3 c4@4 c4@3 b3", AC: "c4@4 c4@3 b3 c4@2 d4@4 f#4@2",
  AD: "b3@4 b3@3 a3 b3@4 b3@3 a3", AE: "b3@4 b3@3 a3 b3@2 c4@4 b3@2", AF: "a3@4 a3@3 g3 a3@4 a3@3 g3", AG: "f#3@3 f#3",
  AH: "g3@3 g3@2 g3@3 g#3@3 g#3@2 g#3@3", AI: "g#3@3 g#3@2 g#3@3 e3@3 f#3@2 g3@3", AJ: "e4@3 d4 c4 b3 a3 g3",
  AK: "f#3@2 e3@2 d3@4 d3@3 e3@2 f#3@3", AL: "d4@3 c4 b3 a3 g3 f#3", AM: "e3@2 d3@2 c3@4 c3@3 d3@2 e3@3",
  AN: "f#3@3 a3@3 d#3@2", AO: "e3@3 e3", AP: "e3 ~",
})).s("gm_trombone").gain(0.2)

stack(piano, trombone)