// Nature Boy — Nat King Cole
// 100 bpm, 4/4, key C# minor. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: sustain pedal (CC 64) lengthens the held notes
// note: Full arrangement: all 66 bars on a 32-step grid, each part at one level. Source detail keeps the original performance.
setcpm(100/4)

// 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 · "A.PIANO 1"
const piano = note("<A@4 B@7 C D@4 E@8 F@3 G@6 H@8 I@3 J@6 K L@5 M@2 N@8>".pickRestart({
  A: "[~@63 e5@3 ~@7 [a4,a5]@5 [c4,d#4,f#4,a4,d#5]@21 ~@7 [g#4,g#5]@4 ~ [g#4,c#5]@17, ~@18 c#3@23 f#4@18 f#5@7 f#3@34 ~ [d#4,a5]@9 [c#4,e4]@18, ~@27 g#3@17 e4@3 a4@3 g#4@17 a3@33 g#3@28, ~@33 d#4@34 [c4,b4]@12 ~@20 e3@29, ~@37 c#4@15 d#5@4 c#5@12 [e4,e5,b5]@11 ~@21 [c4,a4,d#5]@11 ~@17]/4", // A Cdim G# C#5 D#dim C#m Cmaj7 E5 …
  B: "[~@17 a4@3 ~@4 d#5@5 ~@5 c4@7 ~@60 c#4@5 ~@26 a5@6 ~@21 c#4@5 ~@25 a5@5 ~@5 [e4,g#4,c#5,c#6]@4 ~@10 c5@3 ~@4 [b4,b5]@4, ~@3 [d#3,f#3]@11 [d#4,b4]@15 [f#3,a3,c#4]@13 ~@35 [c#3,g#5]@11 [d#4,e4,g#4]@4 c#4@4 c4@10 [c#3,a3,c#4,e4]@18 a3@14 [c#3,g#5]@13 c#4@4 c4@10 ~@11 d#5@4 e5@4 [d#4,f#5]@10 ~@9 g#4@7 [g#4,e5]@6 ~@8, ~@4 a3@10 f#4@6 [f#4,a4,e5] c#5@9 ~@11 [f#3,c4,e4,a4]@36 ~@6 e5@23 ~@8 g#4@11 [c4,d#5]@12 ~@6 [g#3,e5]@21 [c#3,a3,d#4,f#4]@17 a3@13 ~@10 [e4,c5]@7 e4@6 ~@7, ~@4 c#5@6 f#5@20 ~@40 g#4@18 c#5@38 ~@21 c#5@35 c4@12 [c#4,g#5]@10 [c4,c6]@13 [b3,e4,g#4,g#5]@7, ~@4 a4 [c#4,g#5]@24 g#2@48 ~@7 g#3@23 ~@11 d#5@4 e5@4 f#5@11 ~@10 [d#4,e4,g#4]@17 ~@8 g#4@11 d#5@11 ~@13 g#5@9 ~@8]/7", // C#m B D#m G#m F#m C#5 Emaj7 A …
  C: "~@9 a#4@3 ~@3 [a4,a5]@4 ~@10 c#5@3, [a#3,a#5]@6 [a3,c#4,f#4,f#5]@4 ~ e5@5, [e4,g#4,a#4]@6 [g#4,c#5]@6 ~@7 [c#4,e4]@7 [c#4,e4,g#4]@6, ~@2 e5@4 ~@4 g#4@3 ~@3, ~@7 e4@5 ~@7 [g#3,g#5]@13", // A A# F#m A#m7b5 C#5 C#m G#
  D: "[~@22 g#4@4 ~@3 g#5@5 f#5@5 ~@15 a#4@3 ~@33 e5@4 ~@9 [b2,d#4]@3 ~@19 [e4,g#4]@3, ~ d#5@25 [d#3,f#3]@25 a2@7 [g#2,f4,a4]@22 g#4@5 [c4,a4] f#5@8 c#5@34, ~ [f#3,a3,d#4,f#4]@8 e3@19 d#4@22 [g3,c#4,f#4,b4]@8 ~@3 f#3@8 ~ f#3@13 c#3@17 c#3@6 a#2@10 g#3@12, ~@5 a4@12 c#4@10 c#4@12 d#5@19 ~@7 c4@10 [c4,d#4]@8 a3@11 [c#4,e4,g#4]@12 e4@15 a#2@7, ~@9 g#4@4 a3@14 [a3,a4,c#5]@31 c4@7 e4@19 f#4@10 ~@3 g#3@9 ~@4 g#3@3 [c#4,d#4,f#4]@15]/4", // B E D#m C# F D#dim Gmaj7 Cm …
  E: "[~@40 a#2@5 [a2,g3,b3,c#4,f#4,b4]@9 ~@20 f4@4 ~@29 g#4@6 ~@21 b4@3 ~ [a3,d#4]@5 g#4@2 ~@5 f#4@4 f#5@5 [f#5,a5]@6 e5@4 ~ c#5@3 ~@10 b4@3 [a3,d#4]@4 ~@7 f#4@3 ~ f#5@3 [a4,f#5,a5]@4 [e5,g#5]@4 ~ [e4,g#4,c#5]@3 ~ e5@3 ~@5 e6@3 e6@2 [e4,g#4]@3 [e4,g#4,b5]@3 ~@17 a5@3, ~@4 [g4,e5]@15 [a#3,c#4,e4]@5 d#4@4 [d#2,a#3]@4 a#2@3 g3@10 ~@9 f4@8 c4@4 f4@4 f#4@8 ~ e4@10 c4@2 a5 d6 g#6 a6 g#6@2 [g#5,d6] [d5,a5]@2 a4@13 g#4@7 [g#2,e5]@4 [e3,e4,c#5]@3 [g#3,c#4]@4 [b3,e4,g#4]@3 c#3@20 [c4,d#4,f#4,a4,d#5]@11 ~@5 g#2@12 c#3@12 d#5@3 [c#5,e5]@3 [c4,d#4,f#4,b4] d#5@7 ~@4 [e5,g#5,c#6]@5 ~@4 e5@3 c6@4 c6 ~@10 a#4@5 c#6 [e4,a#6] a3 c#4 [f#4,a4] [c#5,f#5]@3 f#4@4, ~@4 d#2@8 g3@3 d#3@30 ~@9 c4@4 f#3@20 ~@6 f#3@29 ~ e5 g#5@23 f#4@5 a3@3 d#5@4 [c#5,e5]@15 ~@4 e5@4 g#4@3 c#4 g#3@9 f#3@22 ~@8 c4@13 ~ [b3,g#5]@6 a#3@20, ~@8 [c#3,d#5]@37 ~@9 g#2@24 d2@35 c#2@25 f#3@27 [c#2,g#5]@21 f#4@4 g#4 a3@17 c#4@9 ~@3 [e4,c5]@9 ~@7 [e4,a#5]@4 c#5@3 a#5@13, ~@12 a#4@33 ~@9 c5@59 c#5@3 f#5@22 a4@5 c4@2 d#4 [g#4,c5]@19 ~@8 [e3,c#5]@6 b3 [e4,g#4]@6 a4@5 c4 d#4@2 [g#4,c5]@14 ~@8 [g#4,c6]@7 [g#4,g#5]@7 ~@6 g#4@3 c#4@3 g#4@14]/8", // F#m Adim F#m Adim D E C#m E …
  F: "[~@75 c#4@2 ~@11 g#4@3 ~ [d#4,g#4,c5,e5]@4, g#3@15 a3@5 [a3,a4]@5 ~@2 a3@7 d#4@3 g#4 a4 f#3@16 d#5@6 f#6 d#6 c#6 a5 g#5 d#5 c#5 a4@2 g#4 f#4@2 d#4@4 g#2@11 a3@8, e4@4 c#4@3 g#6 e4@8 d#5@19 e4@5 [d#3,a3]@37 c4@5 d#4@3 [c4,a4]@11, g#5@3 c#5@2 g#5 c#6@5 [c#5,g#5] c#4@4 [d#4,f#4]@7 g#4@8 c#4@5 f#4@4 [b4,c#5] d#5 e5 [d#4,f#5] g#5@6 f#5@28 ~@3 f#4@15, ~@2 g#4@12 f#3@9 e3@18 c#4@14 g#6@23 ~@4 f#3@14]/3", // G# A D#dim F C#5 D#m Bsus2 D#m
  G: "[[c4,f#4,g#4,d#5]@5 ~@48 g#4@6 ~@22 a4@4 ~@31 g#4@3 ~@20 [g#3,c#4,e4,g#4]@9 ~@23 c#3@7 ~ c#4@6 [c#3,a3]@5 f#3@2, ~@5 c#3@9 [e4,a5]@7 [g#4,c#6]@2 f#6@2 e6@7 g#6@10 [c#4,g#4] e4 g#3 e3@2 a#2@12 [g4,e5]@12 d#3@5 c#4@9 [g#2,c#5]@34 e4@7 g#2@23 ~@3 g#2@5 [f4,g#4]@4 c#3@5 [g#3,c#4,f4,g#4]@12 f#2@14, ~@6 [a4,f#5]@19 b2@2 d#7@7 g#3 d#6@25 ~@8 [g3,a#4]@18 f#4@13 g#3@21 ~ c#5@58 ~@13, ~@10 [g#3,e5]@19 c#7@7 c#6@24 ~@4 [a#2,d#5]@22 ~@4 [f#3,c5]@30 c#2@10 [c#4,e4,g#4]@4 c#3@14 c#2@31 ~@13, ~@10 g#4@3 c#5@4 [c#4,g#5]@3 d#6@9 a#2@4 e6@4 g#5 [c#4,e5]@2 d#5 c#5@19 d#2@26 ~@9 c4@10 [c4,d#4,f#4,a4]@15 g#4@10 e3@18 ~@8 c#4 f3@22 ~@13]/6", // G#7 C#m F#m A5 C#5 C C#5 Fm …
  H: "[~@41 d4@3 d4 ~ c#4@6 ~@16 a5@3 ~@31 f#4@4 ~@22 a6 ~@18 c#4 ~@4 d4@3 ~@39 c#5@6 ~@20 d2@8 ~@24 c#5@4, ~@3 c#5@4 c#5@8 [f#2,b4]@9 c#3@20 c#4@2 ~@15 [c#4,c#5]@4 f#4@6 [f#2,b4]@11 [g#3,f4,b4]@12 f#2@12 ~@3 f#4@3 a4 f4 b4 c#5@5 a5@2 c#6@3 [e4,f6] f#6 g#6@2 b6@3 f7 f#7 [g#7,a7]@3 c#7 [c#5,f#5,a6] f#6 c#6 a5@2 f#5@2 a4 d3@10 ~@2 c#5 f#3@2 f#5 c#4 c#6 f#6 c#7 f#3@2 b2@7 b3@8 [f#4,a4]@5 [g#3,g#4]@12 ~@5 [b4,b5]@23 ~@5 c#3@14 c#5@3 [c#4,c5]@6, ~@4 c#4@12 d5@13 [g#3,f4,b4]@17 ~@6 [c#3,a3]@20 ~@6 c#3@12 b3@4 d4@3 [f#3,a3]@9 f3@16 ~@2 d#6@4 d#3@18 f#4@2 b3@7 [c#3,a3]@14 d3@40 [b3,g#4,g#5]@19 c#4@12 [c#4,c#5]@4 d5@12, ~@8 [f#4,a4,g#5]@9 a5@11 ~@6 a3@12 ~@11 f#3@15 ~ a5@10 ~@4 a3@8 c#3@11 f4@4 a3@6 d#5 [c#4,f5] f#5@3 c#4@9 c#7 d#7@3 a4@2 f#7@11 f#3@9 ~ f#4@13 f#3@31 ~@4 f#3@14 [d3,f#3,c4,e4]@8 ~ b3@8 ~ b3@19, ~@11 f#5@18 ~ f5@7 b3@8 f#2@19 b5@8 d5@11 ~ f5@13 ~ c#4@8 c#4@5 g#4@8 g#5@2 [e3,a3,b5]@9 d#4@19 ~@6 c#4@5 c#5@11 ~ g#3@7 [a2,d4]@21 [g#2,c#5,f#5,c#6]@28 [c#2,f3,f4]@28]/8", // B5 C# B5 Fdim Fmaj7 Amaj7 F#m G# …
  I: "[~@18 [e2,e3,b3]@3 ~@4 d#3@3 ~@12 c#5@6 ~@35 f#3@5 [d3,c4,e4,f#4,b4,e5]@10, ~ [f#2,b4,d5,b5]@14 a3@6 a3@10 ~ a3@14 ~@4 g#5@19 [g#2,c4,d#4]@4 f#3@3 c4@10 ~@10, ~@5 [c#3,a4,c#5,a5]@16 d#2@25 g#2@7 d#5@7 c4 a4@26 ~@9, ~@9 [f#4,f#5]@13 c#4@14 [c#4,f#4,a4]@10 [c5,a5]@41 ~@9, ~@9 a3@3 f#3@10 ~@6 [d#3,g#4,b4]@18 ~@4 f#3@3 c4@3 g#3@5 d#4@4 g#4@22 ~@9]/3", // E5 Bm G# F#m F# F#m F G#m
  J: "[~@21 a#4@4 ~@31 c#5@5 ~@15 f#4@5 ~@3 e4@4 e4@3 ~ d4@5 d4@4 d4@3 ~@15 g#4@5 [g#4,a5]@3 ~@9 e4@3 e4@3 ~ d4@4 d4@3 ~ d4@3 ~@4 f4@4 [f4,d6]@2 ~@2 f#4@4 [a4,c#5]@3 ~@9 [a4,c#5]@3 ~@3 [e5,e6]@3 [d#3,a3,c#4,d#4], f5@33 f5@2 e6 c#6 f4 f6 a6 e7@22 [a3,c#4]@8 a5@5 [c#4,a4,c#5] f#5@32 [f4,g#5] b5@4 [f4,d6]@4 [a3,c#4]@10 [a3,c#4,a4]@16 [b3,f#4,b4,d5]@13 [b3,d4,d5]@8 a3@9 f6@6 [f3,a3,c#4,f4,f5]@6 [e3,a3,c#4,e4,c#5,c#6]@7, c#3@12 a#4@4 b4@8 ~@7 b3@10 c#7@20 f#3@10 g#4@10 f#4@11 [f#4,b4]@24 f#3@16 f#4@11 f#3@8 g#5@3 [d4,a5]@3 g#5@8 c#4@8 [f4,a4,c#5,f5]@3 [a5,c#6]@9 ~@7, a#4@9 f4@16 f4@9 a5@29 [c#5,f#5]@11 [f#3,a3]@18 [f#3,b3,d5]@9 g#5@3 d4 a5@13 [c#5,f#5]@10 c#5@15 ~@4 c#5@8 f#3@9 f#3@21 ~@7, f4@5 b3@20 [g2,a4]@38 ~ [g#4,a5] c#6@27 ~@5 c#5@9 [f#3,b3] [d4,d5]@11 a5 c#6@9 f#4 f#5@29 b5@7 c#5 c#6@4 [f#4,f#5,f#6]@15 ~@7]/6", // Amaj7 Dm A E D#m7b5 A F#m Fm …
  K: "~@7 [f#5,a5]@3 ~@3 [d5,d6]@3 ~@10 f#5@4 [b2,d3,f#3,b3,b4,g#5]@2, d#6@5 ~@3 [c#4,c#5]@3 [c#4,f#4,a4]@4 ~, d#5@4 [d#4,f#4,a4,d#5]@5 ~ [d3,f#3,b3,d4,b4,b5]@7 ~@2 a5@11 ~@2, ~@2 [f#5,a5]@5 ~@9 [c#3,f#3,a3,c#6]@14 ~@2, ~@19 f#5@4 c#5@7 ~@2", // F#m D G#m7b5 C# F#m D#dim Bm F#m
  L: "[~@17 [a3,c#4,f#4,c#5]@7 ~@20 [d2,d3,f#3,c4,e4]@10 ~ c#3@4 ~@16 c#5@3 ~@5 [a3,c#4,a4,c#5,a5]@5 f#4@9 ~@6 c4@5 ~@14 [d#4,a4]@17 ~ [g3,e4,c#5]@6 ~@7 [c4,g#4,c5,g#5]@5 [g#2,d#4,d#5]@2, ~ d5@22 ~@7 [b4,b5]@25 b3@8 b3@16 [b3,d4,b4,d5,b5]@9 ~@9 [g3,a#3,d4,f#4]@10 ~@11 a5@3 f#6@17 ~@10 a5@11 ~, ~@5 a2@19 [g#2,c#5,f#5,c#6]@31 ~@4 c#3@7 [c#4,c#5]@3 [d4,d5]@2 c#4@8 ~@29 d#4@12 [c#6,a6]@19 ~@8 c5@6 ~@7, ~@5 c#5@7 f#3@11 ~ g#3@10 [g#3,b3,d4,g#4,g#5]@21 [f3,d#4,f4]@24 ~@9 [f#3,a3,c#4,a4,f#5]@20 ~@7 d#3@24 [a#2,e3,c#4]@8 d3@12 ~, ~@9 d3@15 [d3,f#3]@20 ~@10 c#2@17 c#5@2 [c4,c5]@6 ~@19 [c2,c3]@10 [b1,b2,a3,c#4,f#4]@31 ~@7 [a2,f#3,a4]@12 ~@2]/5", // F#m D7 A D#dim C#dim Fm G#5 B …
  M: "[~@14 [d4,d5]@6 ~@27 [d4,d5]@15 [c#4,c#5]@2, ~@3 [f#3,g#4]@18 [c#2,f#4]@17 b3@8 f4@18, ~@7 c5@13 f#5@44, ~@8 c4@13 ~@5 [c#3,f5]@38, ~@13 f4@3 g#3@16]/2", // D C# F#sus2 F#5 C#
  N: "[~@104 b4@12 ~@61 [g#6,b6]@54 ~@25, ~@5 f#5@20 f#3@4 b3@3 a3@4 d4@3 c#4@3 g#4@3 f#4@4 b4@4 a4@4 f3@3 e6@24 d6@9 a4@23 g#5@10 e6@5 [a3,c#6]@15 a4@16 a5@64 ~@30, ~@5 a4@15 g#3@36 [b2,d3]@10 b3@8 d4@7 d5 f5 f4@34 c#6@9 c#3@16 g#4@15 g#5@64 ~@35, ~@5 f#4@10 c#3@43 [a3,e5]@60 f#2@21 e4@14 e5@64 ~@39, ~@6 f#2@52 ~ a5@59 g#6@17 c#4@14 c#5@19 e6@63 ~@25]/8", // G#m A Bm A5
})).s("gm_piano").gain(0.4)

stack(piano)