// Aria From the Goldberg Variations, BWV 988 — Bach Johann Sebastian
// 120 bpm, 4/4, key G major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: sustain pedal (CC 64) lengthens the held notes
// note: Full arrangement: all 69 bars on a 32-step grid, each part at one level; ghost notes are separate "_soft" parts. 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 · "A.PIANO 1"
const piano = note("<A B@7 C@7 D@7 E@4 F@2 G@4 H I@2 J@3 K@8 L@8 M@8 N O@6>".pickRestart({
  A: "g5@7 ~@9 g5@15 a5",
  B: "[~ g5@3 ~@36 e5@10 ~@49 g4@3 f#4@2 g4@3 a4@4 a4@2 ~ a4@3 a4 g4 a4 ~ g4@2 f#4@5 ~@8 g4@2 ~@8 f#4@2 e4@6 ~@42 d5@18 d5@10, ~@4 a5@16 a5@23 ~@181, ~@15 b5@6 f#3@64 g4@14 ~@14 g4@3 ~@12 g4@8 ~@2 f#4@8 ~@8 e4@15 ~@55, ~@30 g5@13 ~@39 f#4@6 ~@8 a4@7 ~@30 a4@5 ~@5 g4@6 ~@15 d4@26 ~@34, ~@35 f#5@9 ~@35 e3@58 ~@48 c3@17 ~@22]/7",
  C: "[~@5 e5@3 ~@14 f5@5 ~@14 c5@5 b4@10 ~@27 f#5@3 g5@2 ~@7 a5@4 ~@7 f#5@3 ~@8 [b3,d5]@4 ~@8 g3@5 f#3@6 e3@6 [f#3,c5]@7 b4@4 ~@10 f#4@11 f#4@3 ~ g4 ~@12 d3@11 ~@2 e3@16, ~@8 d5@5 ~@15 c3@59 ~@19 d3@49 ~@52 d3@4 ~@13, ~@10 e5@17 e5@20 ~@29 [d3,g5]@10 e3@13 ~@107 e3@2 ~@16, ~@36 d5@11 ~@9 a4@31 ~@8 c4@25 ~@3 a3@6 a5@17 ~@78, ~@79 f#5@2 e5@6 ~ f#5@11 g5@10 e5@11 ~ c5@4 c5@7 ~@26 g4@23 ~@4 g4@39]/7", // Bm F#dim G5
  D: "[~ f#3@7 ~@22 b4@19 ~@2 b4@3 ~@13 d5@5 d5@6 c#5@6 ~@13 f#3 ~ f#3@7 e3@9 f#3@10 ~@32 g5@2 ~ g5@4 ~@7 g5@2 ~@2 a5@2 g5@2 ~ g5 ~ a5@2 ~@3 g5@3 f#5@5 g5@6 ~@12 f#5@5 e5@6, ~@8 b4@22 ~@19 c#5@5 c#5@19 ~@11 b4@12 g3@2 ~@27 b3@10 e5@21 a5@5 ~@3 a5@5 ~ a5@3 a5@2 ~@4 a5@2 ~@3 g5@3 ~@3 [g3,d4]@16 ~@18, ~@9 g3@79 ~@6 d5@42 ~ e3@32 e3@12 ~@4 a5@7 ~@32, ~@50 e4@24 ~@15 a4@39 ~@3 g4@7 g5@11 b3@10 e4@32 ~@10 [c#4,g5]@16 ~@7, ~@133 b4@26 f#5@3 ~@5 g5@4 ~@3 g5@3 ~@2 f#3@13 ~@9 a3@23]/7", // G5 C#dim
  E: "[~@2 c#5@2 ~@8 b3@11 ~@10 e5@7 ~@18 e5@6 ~@11 a4@12 ~@3 c5@14 b4@6 a4@5 g4@5 f#4@8, d5@3 ~@2 b4@5 ~@13 a3@15 ~@6 f#3@62 ~@22, ~ e4@37 ~@11 g5@15 ~@64, ~@7 c#5@30 ~@6 a5@8 ~@2 f#5@11 d5@14 ~@9 b4@7 ~@34, ~@33 g3@16 ~@79]/4",
  F: "[~@10 d5@5 ~@31 d5@6 c#5@5 b4@5 a4@2, e4@18 ~@4 e4@29 ~@13, ~@15 c#5@35 ~@14, ~@18 d5@5 f#4@9, ~@39 e5@12 ~@13]/2",
  G: "[~@40 c#5@12 ~@27 c#5@5 ~ c#5@13 d5@30, ~@3 g5@20 f#4@11 ~@19 d3@75, ~@5 e4@19 ~@6 g4@58 ~@40, ~@18 b4@23 ~@11 c#5@7 d5@17 d5@11 ~@41, ~@73 e5@14 ~@41]/4",
  H: "~@23 a4@2 g4@3 a4@4",
  I: "[~@20 a4 g4 ~ a4@9 ~@2 a4@2 ~ a4@2 a4 ~ b4@2 ~ b4@2 a4@3 b4@2 c5@2 d5@3 e5@2 ~@3 b3@3, ~@11 e4@10 ~@11 a4@2 ~@5 c4@25, ~@9 f#4@23, ~@33 b4@3 ~@7 a4@2 ~@15 e5@4]/2",
  J: "[~@7 c5@4 ~@6 a4@6 ~@5 a3@10 ~@37 d#5@3 ~@3 e5@2 ~@6 b3@7, ~@2 d5@8 ~@13 g4@35 c4@20 d#5@5 d#5@2 e5@11, ~@19 b3@12 e5@8 g4@9, ~@48 g5@18 ~@7 f#5@20 ~@3, ~@57 f#5@9 ~@2 e4@25 ~@3]/3",
  K: "[~@42 f#5@5 ~@33 f#3@12 ~@15 f#5@5 ~ a3@2 ~@39 b4@4 ~@3 e5@9 ~@4 d#5@7 ~ a3@2 ~@27 g4@6 ~@26 e5@6 [b2,e5]@6 d#5, ~@2 a3@18 a5@2 g5@4 ~@10 e4@11 ~ f#4@45 ~@9 a3@11 f#5@8 ~@3 f#3@15 ~@2 b4@8 b4@5 ~@4 c3@48 b2@22 a2@23 ~@5, ~@2 f#4@2 f#4@20 b3@34 ~ a3@15 ~@5 b4@14 ~@19 g3@3 g3@13 ~@8 g3@24 ~@11 a3@11 ~@11 f#3@15 ~@14 e4@11 ~@23, ~@3 g4@3 ~@8 a5@4 b5@6 d#4@14 ~@17 d#5@26 ~@11 g5@25 ~@2 e5@23 ~@4 c5@13 g5@4 ~@7 f#5@4 ~@7 d#5@6 e5@24 ~@6 f#4@10 f#4@29, ~@15 e4@10 a5@22 e5@9 ~@13 g3@13 ~@10 e3@48 ~@12 a4@7 ~@22 g3@3 g3@12 ~@9 g3@13 b3@15 ~@5 c3@13 ~@5]/8", // E5
  L: "[~@9 a5@11 ~@12 f#5@11 ~@24 d#5@6 ~@24 e3@11 ~@34 c5@6 ~@43 d5@3 c5@2 ~@8 b4@2 a4@6 [e3,a4]@5 d3@5 e3@6 f#3@5 g3@5 ~ f#3@6 a4@5 b4@5 c5, ~@4 e5@4 a2@14 ~@10 a4@42 g4@40 ~@8 c3@63 c5@6 b2@65, ~@5 f#5@4 c5@7 ~@5 b2@23 e3@41 e5@31 ~@6 e5@28 ~@30 b4@14 ~@2 b4@5 f#3@13 ~@31 g3@11, ~@7 g5@3 ~@10 g5@12 d#3@20 e5@12 f#5@9 d#5@13 ~@51 d5@13 ~@9 a4@35 ~@6 c5@3 ~@14 g4@28 ~@11, ~@43 f#5@11 ~@4 b2@19 ~@31 d3@17 ~@23 b4@14 ~@8 a3@33 ~@53]/8", // A5
  M: "[~@4 d5@5 ~@6 b4@5 ~@5 a4@5 ~@5 a4@6 ~@15 g4@5 ~@5 d5@6 c5@5 b4@5 ~@5 a4@5 ~@5 a4@4 ~ c5@5 e5@5 ~@5 c5@6 b4@6 c5@5 ~@5 a4@5 ~@5 g4@5 ~@5 g4@5 b4@5 ~@10 d5@5 e5@5 f5@5 e5@5 d5@5 e5@5 c5@5 ~@24 g5@5 ~@6 c5@4 b4 ~ d3, a2@30 e4@20 [e2,a4]@11 ~ d2@13 ~@7 [d3,c5]@12 ~@7 b2@12 a2@11 ~@10 d3@11 ~@9 f3@11 ~@19 c3@11 ~@38 f#5@6 ~@4 a5@11 ~@2, ~@9 c5@6 ~@5 a3@14 ~@7 c5@27 ~@44 d5@5 ~@27 b4@15 ~@10 g4@40 ~@5 [b3,g4]@20 ~@10 f#3@12, ~@10 e3@10 c5@11 g2@10 f#2@12 ~@19 a2@11 ~@9 c3@11 ~@20 g2@14 ~@17 d4@8 ~@12 c5@6 ~@39 c5@10 c5@16 ~@9 c5@2, ~@46 b4@7 ~@8 f#4@24 ~@7 f#4@30 ~@22 g3@11 ~@9 e3@11 d3@10 ~@9 g3@10 c4@11 ~@9 [a3,e5]@10 g3@11 ~@11]/8", // A5 D7 Em A5
  N: "b4@4 a4@5 ~@6 c5@5 d5@6 g4@6, ~@9 b4@6 ~@5 b3@12, ~@10 g3@13 ~@9",
  O: "[b4@5 a4@5 ~ g4@6 f#4@7 ~@7 c4@6 b3@6 a3@6 ~@9 d4@12 ~@122, ~@11 d3@13 g4@36 ~@132, ~@49 b3@127 ~@16]/6",
})).s("gm_piano").gain(0.32)

// chords · piano · "A.PIANO 1" · soft notes
const piano_soft = note(`<
  A@2 B@7 C@3 D@5 E@2 ~@2 F ~@2 G@6 H@5 I@3 ~@4 J ~@3 K ~ L@2 M@2 ~@5 N@2 ~@4 O@6
>`.pickRestart({
  A: "[~@16 d4@13 ~@3, g3@27 ~@5, ~@4 b3@5 ~@7]/2",
  B: "[~@47 g4@6 ~@24 g4@4 ~@3 g4 ~@113 g3@26, ~@9 a3@23 ~@33 g3@20 ~@16 d3@52 ~@11 b2@56 ~@4, ~@9 d5@19 ~@43 a3@14 ~@27, ~@29 d4@43 ~@10 c#4@24 ~@17 f#3@30 ~@29 d3@22 ~@20]/7",
  C: "[~@64 c3@13 ~@19, ~@5 e3@13 ~@14, ~@33 a3@34 ~@29]/3",
  D: "[~@40 a3@11 ~@4 f#4@2 ~@70 b3@25 ~@8, ~@26 g2@57 ~@77, ~@26 g3@25 b3@57 ~@52]/5",
  E: "[~@30 f#3@3 ~ g3@3 ~@27, ~@9 a3@26 ~@29]/2", F: "~@21 d4@11",
  G: "[a3@20 ~@44 b3@30 ~@17 a3@70 ~@11, ~@5 d4@10 ~@33, ~@5 g3@8 ~@11]/6",
  H: "[~@34 a3@15 d4@32 ~@33 b4@3 ~@9 b4@3 ~@3 b4@2 b4 ~@25, ~@21 f#4@60 ~@6 d4@48 ~@25]/5",
  I: "[~@12 b4@5 d4@48 ~@31, ~@8 c4@11 ~@77]/3", J: "~@8 d3@23 ~", K: "~@21 b4@11",
  L: "[~@21 b2@13 ~@30, ~@5 e2@14 ~@13]/2", M: "[~@10 e3@13 ~@9]/2", N: "[~@28 g4@9 ~ b4@5 ~@21]/2",
  O: "[d4@14 ~@53 g4@9 f#4@6 ~@38 g4@56 ~@16, ~@25 g3@54 ~@13 f#4@31 ~@69, ~@67 d3@56 ~@69, ~@93 g2@83 ~@16]/6",
})).s("gm_piano").gain(0.16)

stack(piano, piano_soft)