// Autum leaves — Joseph Koshma
// 120 bpm, 4/4, key G major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: Transcription provider: pdmx. https://musescore.com/score/5979760; license: https://creativecommons.org/publicdomain/zero/1.0/
// note: Full arrangement: all 33 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 · [...]/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 B C D E F G H A B C D E F I J K L M H N F O D P Q R S@2 F I T@2>".pickRestart({
  A: "~ e4 f#4 g4", B: "[e4,g4,c5]@15 ~", C: "~ d4 e4 f#4", D: "[d4,f#4,b4]@15 ~", E: "~ c4 d4 e4",
  F: "[c4,e4,a4]@15 ~", G: "~ b3 c#4 d#4", H: "[b3,d4,g4]@15 ~", I: "~ f#4 a4 g4", J: "[g3,b3,e4]@15 ~",
  K: "~@2 d#4 e4", L: "[a3,c4,f#4]@15 ~", M: "[b3,d#4,f#4]@2 e4 f#4", N: "~ g4 f#4 g4", O: "~ d4 d5 c5",
  P: "~@2 a#4 b4", Q: "[f#4,a4,c5] c5@2 a4", R: "f#4 c5", S: "[[d4,g4,b4]@23 ~@5 e4@4]/2", T: "[[g3,b3,e4]@23 ~@9]/2",
})).s("gm_piano").gain(0.3)

stack(piano)