// From the Bottom of My Broken Heart — Britney Spears
// 76 bpm, 4/4, key G major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: metre changes (4/4 at bar 1, 2/4 at bar 22, 4/4 at bar 23, 2/4 at bar 53, ...) are rendered on a constant 4/4 grid of one bar per cycle
// note: sustain pedal (CC 64) lengthens the held notes
// note: duplicate parts dropped: ch 4 "Staff-1" piano (copy of ch 1 "Right Hand" acoustic guitar steel)
// note: Full arrangement: all 95 bars on a 16-step grid, each part at one level. Source detail keeps the original performance.
setcpm(76/4)

// 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 · acoustic guitar steel · "Right Hand"
const acoustic_guitar_steel = note(`<
  A B C D E F G H I J@2 K L J@2 K M N O@8 P Q@8 R@5 S@7 T@8 U@6 V@3 W@8 X@7 Q@8 Y@8
>`.pickRestart({
  A: "g5 f#5 d5 a4@8 ~ g4@2 a4@2", B: "[d4,g4,b4]@5 e5@2 d5", C: "~ d4 a4 d5 a4@5 ~ e4@2 f#4@2 g4@2",
  D: "~ g3 b3 d4 g3@5 ~ f#4@2 e4@2 d4@2", E: "~ g3 b3 g4 d4 b3 g3@4 e4@2 f#4@2 g4@2",
  F: "~ g3 b3 e4 b3 g3 b3 e4 b3@2 f#4@2 e4@2 d4@2", G: "~ f#3 a3 f#4 d4 f#3 a3 f#4 d4@2 e4@2 g4@2 b4@2",
  H: "~ c4 e4 g4 e4@5 ~ [d4,a4]@2 [c4,e4,g4]@2 e4@2", I: "~ g3 c4 e4 c4 g3 c4 e4 [g3,c4]@2 ~@6",
  J: "[[b3,d4,g4]@2 f#4@2 g4@2 [a3,d4,f#4]@5 ~ b3@2 [g3,b3,e4]@4 d4@3 ~ [g3,c4,e4]@4 d4@2 c4@2 b3@2]/2", // G D Em C
  K: "[e3,g3,c4]@3 ~ g3@2 [f#3,a3,d4]@4 c4@3 ~ c4@2", L: "b3@3 ~ d4@2 [e3,g3,a3,c4]@5 ~ e4@2 d4@2",
  M: "[g3,b3]@3 ~ g3 b3 d4@2 [g3,b3,e4]@2 d4@2 a3@2 g4@2", N: "[e4,g4,b4] a4 g4 [e4,g4]@2 g4 a4 [d#4,g4,b4]",
  O: "[~@2 a4@2 g4@2 g4@4 g4@2 a4@2 [d4,g4,b4]@4 a4@2 g4@2 [d4,g4]@4 g4@2 e4@2 [c#4,e4,a4]@3 g4 e4@4 [g3,c#4,e4]@8 ~ f#4 [c4,g4]@2 [a3,d4,f#4]@2 [a3,c4]@2 [g3,a3,c4,d4]@9 ~ g3@3 ~ a3@3 ~ [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 e4@4 ~@2 [f#3,a3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,d4,g4]@4 [b3,d4,g4]@2 [b3,d4,g4]@2 [b3,d4,g4]@2 [d4,g4]@2 f#4@2 e4@2 ~@2 [g3,b3,d4]@8, ~@3 d#4@61, ~@19 b3@17 ~@5 b3@10 ~@5 b3@4 ~@4, ~@23 e4 e4@2 e4@15 ~@2 e4@6 e4@9 ~ e4@5]/8", // G G5 A C#dim C5 D Am Gsus4 …
  P: "d4 ~ f#4 [b3,e4,g4]@3 [b3,e4,g4]@2, ~ e4@2 ~@5", // Em
  Q: "[g4@2 f#4@2 e4@2 [f#3,a3]@5 ~ [f#3,a3,d4]@3 ~ d4@2 ~@2 g4@2 [c4,e4,b4]@4 [c4,e4,b4]@2 [c4,e4,b4]@2 [c4,e4,b4]@2 [c4,b4]@2 [d4,a4]@2 [c4,e4,g4]@2 [g3,c4]@5 ~ [g3,a3,c4,d4]@3 ~ [g3,a3,c4,d4]@3 ~ g3@2 a3@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 e4@4 ~@2 [f#3,a3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,d4,g4]@4 [b3,d4,g4]@2 [b3,d4,g4]@2 [b3,d4,g4]@2 [d4,g4]@2 f#4@2 e4@2 ~@2 [g3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,e4,g4]@6 [b3,e4,g4]@4, b3@28 ~@5 b3@10 ~@5 b3@4 b3@7 ~@5, e4@2 ~ e4@6 e4@2 ~@5 e4@2 ~ e4@14 ~@2 e4@6 e4@9 ~ e4@6 e4@2 ~@5]/8", // F#m D Cmaj7 D5 C C5 Gsus4 G …
  R: "[g4@2 f#4@2 e4@2 [f#3,a3]@5 ~ [f#3,a3,d4]@3 ~ d4@2 ~@2 g4@2 [c4,g4,b4]@13 ~ g3@2 a3@2 [g3,a3,c4]@2 c4@2 [g3,a3,c4]@2 d4@2 g3@2 a3@2 g3@2 a3@2 g3@3 ~ a3@2 [g3,a3,d4]@5 ~ [a3,d4,f#4]@3 ~ [d4,g4]@2 f#4@2 g4@2 [a3,d4,f#4]@2, b3@6 b3@3 b3, e4@2 ~ e4@6 e4@2 e4@29]/5", // F#m D Cmaj7 Am7 Gsus2 D G5 D
  S: "[~@4 b3@2 g3@4 d4@3 ~ [g3,c4]@4 d4@2 c4@2 ~@2 [e3,g3,c4]@3 ~ g3@2 [f#3,a3,d4]@4 c4@3 ~ c4@2 ~@4 d4@2 [e3,g3,a3,c4]@5 ~@3 d4@2 [d4,g4]@2 f#4@2 g4@2 [a3,d4,f#4]@5 ~ b3@2 g3@4 d4@3 ~ [g3,c4]@4 d4@2 c4@2 ~@2 [e3,g3,c4]@3 ~ g3@2 [f#3,a3,d4]@4 c4@3 ~ c4@2 b3@4 g3 ~ d4@2, ~@6 b3@16 b3@18 b3@16 b3@12 ~@2 b3@16 b3@18 g3@3 ~@2 b3@3, ~@3 e4@4 e4@19 e4@9 e4@4 e4@17]/7", // C5 C D Am7 G5 D C5 C …
  T: "[g3@2 d4@2 a3@2 g4@2 [g4,b4]@2 a4@2 g4@2 g4@4 g4@2 a4@2 [g4,b4]@4 a4@2 g4@2 g4@4 g4@2 a4@2 [d4,g4,b4]@4 a4@2 g4@2 [d4,g4]@4 g4@2 e4@2 [c#4,e4,a4]@3 g4 e4@4 [g3,c#4,e4]@8 ~ f#4 [c4,g4]@2 [a3,d4,f#4]@2 [a3,c4]@2 [g3,a3,c4,d4]@9 ~ g3@3 ~ a3@3 ~ [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 e4@4 ~@2 [f#3,a3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,d4,g4]@2, b3@31 b3@17 ~@5 b3@10 ~, e4@4 e4@3 e4@19 ~@9 e4 e4@2 e4@15 ~@2 e4@6 e4@3, ~@11 d#4@4 d#4@49]/8", // G G5 A C#dim C5 D Am Gsus4 …
  U: "[~@2 [b3,d4,g4]@2 [b3,d4,g4]@2 [b3,d4,g4]@2 [d4,g4]@2 f#4@2 e4@2 ~@2 [g3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,e4,g4]@6 [b3,e4,g4]@4 g4@2 f#4@2 e4@2 [f#3,a3]@5 ~ [f#3,a3,d4]@3 ~ d4@2 ~@2 g4@2 [c4,e4,b4]@4 [c4,e4,b4]@2 [c4,e4,b4]@2 [c4,e4,b4]@2 [c4,b4]@2 [d4,a4]@2 [c4,e4,g4]@2 [g3,c4]@5 ~ [g3,a3,c4,d4]@3 ~ [g3,a3,c4,d4]@3 ~ g3@2 a3@2, ~@4 b3@4 b3@7 ~@5 b3@28, ~@7 e4@6 e4@2 ~@5 e4@2 ~ e4@6 e4@2 ~@5 e4@2 ~ e4@9]/6", // G G5 Em F#m D Cmaj7 D5 C …
  V: "[[g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 e4@4 ~@2 [f#3,a3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,d4,g4]@4 [b3,d4,g4]@2 [b3,d4,g4]@2 [b3,d4,g4]@2 [d4,g4]@2 f#4@2 e4@2 e4@2, ~@5 b3@10 ~@5 b3@4, ~@7 e4@6 e4@9 ~@2]/3", // G D G G5
  W: "[[g3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,e4,g4]@6 [b3,e4,g4]@4 g4@2 f#4@2 e4@2 [f#3,a3]@5 ~ [f#3,a3,d4]@3 ~ d4@2 ~@2 g4@2 [c4,g4,b4]@13 ~ g3@2 a3@2 [g3,a3,c4]@2 c4@2 [g3,a3,d4]@3 c4 g3@2 a3@2 g3@2 g4@2 [g4,b4]@2 a4@2 g4@2 g4@4 g4@2 a4@2 [g4,b4]@4 a4@2 g4@2 g4@4 g4@2 a4@2 [d4,g4,b4]@4 a4@2 g4@2 d4@2 d4@2 b4@2 g4@2 a4@2, b3@7 ~@5 b3@24 b3@28, ~@5 e4@2 ~@5 e4@2 ~ e4@6 e4@2 e4@17 e4@3 e4@21, ~@59 g4@2 ~@3]/8", // G5 Em F#m D Cmaj7 Am7 Gsus2 G
  X: "[[b3,c#4,e4,g4]@6 [c#4,e4,g4]@8 ~ f#4 [c4,g4]@2 [d4,f#4]@2 [g3,c4]@2 [g3,a3,c4,d4]@9 ~ g3@3 ~ a3@3 ~ [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 [g3,b3]@2 e4@4 ~@2 [f#3,a3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,d4,g4]@4 [b3,d4,g4]@2 [b3,d4,g4]@2 [b3,d4,g4]@2 [d4,g4]@2 f#4@2 e4@2 ~@2 [g3,d4]@7 ~ d4@2 ~@2 f#4@2 [b3,e4,g4]@6 [b3,e4,g4]@4, ~@3 b3@6 b3@11 ~@5 b3@10 ~@5 b3@4 b3@7 ~@5, ~@7 e4 e4@2 e4@15 ~@2 e4@6 e4@9 ~ e4@6 e4@2 ~@5]/7", // C#m7b5 C#dim C5 D C5 Gsus4 G D …
  Y: "[g4@2 f#4@2 e4@2 [f#3,a3]@5 ~ [f#3,a3,d4]@3 ~ d4@2 ~@2 g4@2 [c4,g4,b4]@13 ~ g3@2 a3@2 [g3,a3,c4]@2 c4@2 [g3,a3,d4]@3 c4 g3@2 a3@2 g3@2 a3@2 [d4,g4]@2 f#4@2 g4@2 [a3,d4,f#4]@5 ~ b3@2 g3@4 d4@3 ~ [g3,c4]@4 d4@2 c4@2 ~@2 [e3,g3,c4]@3 ~ g3@2 [f#3,a3,d4]@4 c4@3 ~ c4@2 g3@15 ~@9, b3@48 b3@8 b3@12 ~@2 b3@49 ~@9, e4@2 ~ e4@38 ~@23]/8", // F#m D Cmaj7 Am7 Gsus2 G5 D C5 …
})).s("gm_acoustic_guitar_steel").gain(0.48)

// other · electric guitar jazz · "Left Hand"
const electric_guitar_jazz = note(`<
  A B C D E F G H@2 I J K L M@2 K B D@3 N O P Q R S T U V W X Y R S T U Z@2 AA AB AC AD@3 AE AF@2 AG AH@2 AI AJ@2 AK C D
  AL F G AM@2 B C D AL F G AN AO AP@2 AQ N O P Q R S T U V W X Y R S T U Z@2 AR AE AS AT@2
>`.pickRestart({
  A: "d3@15 ~", B: "g2@5 ~ g2@2 g2@7 ~", C: "f#2@5 ~ f#2@2 f#2@7 ~", D: "e2@5 ~ e2@2 e2@7 ~",
  E: "d2@5 ~ d2@2 d2@5 ~ a2 b2", F: "c3@5 ~ c3@2 c3@7 ~", G: "b2@5 ~ b2@2 b2@7 ~",
  H: "[a2@5 ~ a2@2 a2@2 b2@2 c3@2 d3@7 ~ d3@2 d3@2 ~@6]/2", I: "e2@5 ~ f#2@2 f#2@5 ~ g2@2",
  J: "g2@5 ~ a2@2 a2@5 ~ b2@2", K: "c3@5 ~ d3@7 ~ e3 f#3", L: "g2@5 ~ d2@9 ~",
  M: "[e2@5 ~ f#2@2 f#2@5 ~ g2@7 ~ a2@2 a2@5 ~ b2@2]/2", N: "a2@5 ~ a2@2 a2@7 ~", O: "a2@2 b2@2 c3@2 d3@9 ~",
  P: "~@8 g2@5 ~ g2@2", Q: "g2@5 ~ g2@2 f#2@5 ~ f#2@2", R: "f#2@7 ~ e2@5 ~ e2@2", S: "e2@7 ~ d2@5 ~ d2@2",
  T: "d2@7 ~ c3@5 ~ c3@2", U: "c3@7 ~ b2@5 ~ b2@2", V: "b2@7 ~ a2@5 ~ a2@2", W: "a2@2 b2@2 c3@2 d3@7 ~ d3@2",
  X: "d3@5 ~ e2 f#2 g2@5 ~ g2@2", Y: "g2@7 ~ f#2@5 ~ f#2@2", Z: "[b2@7 ~ a2@5 ~ b2@4 c3@3 ~ c#3@2 d3@3 ~ d2@3 ~]/2",
  AA: "d2@3 ~ d2@2 d2 e2 g2@5 ~ g2@2", AB: "g2@3 ~ f#2@3 ~ e2@5 ~ f#2@2", AC: "f#2@5 ~ g2@2 g2@5 ~ a2@2",
  AD: "[a2@5 ~ b2@2 c3@5 ~ d3@7 ~ e3 f#3 g2@5 ~ d2@9 ~ e2@5 ~ f#2@2]/3", AE: "f#2@5 ~ g2@7 ~ a2@2",
  AF: "[a2@5 ~ b2@2 c3@5 ~ d3@7 ~ e3 f#3 g2@5 ~ g2@2]/2", AG: "g2@7 ~ e2@5 ~ e2@2", AH: "e2@7 ~ e2@5 ~ e2@2",
  AI: "e2@7 ~ a2@5 ~ a2@2", AJ: "[a2@7 ~ a2@2 b2@2 c3@2 d3@9 ~@9]/2", AK: "g2@5 ~ g2@2 g2@5 ~ g2@2",
  AL: "d2@5 ~ d2@2 d2@7 ~", AM: "[a2@5 ~ a2@2 a2@2 b2@2 c3@2 d3@7 ~ d3@2 d3@5 ~ e2 f#2]/2",
  AN: "a2@5 ~ b2@4 c3@3 ~ c#3@2", AO: "d3@3 ~ d2@3 ~ d2@3 ~ d2@2 d2 d#2", AP: "e2@3 ~ b2@2 f#3@4 e3@3 ~ b2@2",
  AQ: "e2@3 ~ b2@2 f#3@4 e3@3 ~ b2 a#2", AR: "d2@3 ~ d2@3 ~ e2@5 ~ f#2@2", AS: "a2@5 ~ b2@2 c3@5 ~ d3@2",
  AT: "[d3@7 ~ [g2,d3]@15 ~@9]/2", // G5
})).s("gm_electric_guitar_jazz").gain(0.72)

// chords · vibraphone · "Staff-1"
const vibraphone = note("<A@4 B@5 ~@86>".pickRestart({
  A: "[~@31 d4, g5@16 g4@18 a4 d5@16 d4 g3@6 f#4@2 e4@4, ~ f#5@15 d4@10 e5@18 f#4@2 g4@18, ~ d5@7 b4@10 a4@14, ~@3 a4@9 g4@2 a4@16 d5@3 d4@9 e4@7 g3 b3@14]/4",
  B: "[~@30 e4 ~@5 [g3,c4]@4, ~ g3@4 b3@9 g4@24 a3@22 g4@20, ~@2 b3@2 d4@22 f#4@2 e4@2 d4@3 f#3 a3 f#4 d4 f#3@12 c4 e4 g4 e4@6 [d4,a4]@22, ~@3 g4@7 e4@7 g3 b3 e4 b3 g3@18 f#4@21 c4@2 e4@3 g3 c4 e4 c4 g3 c4 e4@9, ~@6 g3@6 f#4@10 b3 e4 b3@16 d4@2 e4@2 g4@2 b4@32 ~@2]/5", // C5 D5
})).s("gm_vibraphone").gain(0.48)

stack(acoustic_guitar_steel, electric_guitar_jazz, vibraphone)