// Beale Street Blues — Morton Jelly Roll
// 152.5 bpm, 4/4, key Bb major. Source: midi.
// Generated by strudelify. One cycle = one bar.
// note: Tempo changes preserved in elapsed time; displayed bars use the dominant tempo.
// note: pitch bends are ignored
// note: Full arrangement: all 129 bars on a 24-step grid, each part at one level. Source detail keeps the original performance.
setcpm(152.5/4)

// 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, A@4 for four bars: edit a riff to change every repeat.

// chords · piano
const piano = note(`<
  A B C D@2 E F@2 G H@2 I J K L M N O P@2 Q@2 R S T@2 U V W X Y Z AA AB AC AD AE AF AG AH N AI Y AJ AK AL AM AN AO AP AQ
  AR AS AT@4 AU AV AW AX AY AQ M AZ BA BB BC BD BE BF@2 BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU@2 BV BW BX BY BZ CA
  CB CC CD@2 CE CF@2 CG CH CI CJ CK@2 CL CM CN CO CP CQ CR CS CT CU@4 CV CW CX CY CZ DA DB DC@2
>`.pickRestart({
  A: "~@17 c6 db6 [d6,e6] gb6@3 ~", // Dsus2
  B: "~ gb6@2 db6@3 ~ bb5@2 [gb4,bb4,db5,gb5]@2 ~@3 db6@2 bb5@3 gb5 ~@2 bb4@2, ~ [gb4,bb4,db5]@5 ~@18", // Gb
  C: "~@2 gb5@2 db5@3 ~ bb4@2 gb4@2 ~@2 db5@2 bb4@3 ~@3 [bb4,db5]@2, ~@5 gb4", // Bbm
  D: "[~@2 db4@3 gb4@3 bb4@2 ~ eb5@4 [eb4,c5]@2 [e4,e5]@4 c5@2 [f4,c5,f5]@4 ~@8 [f4,c5,eb5]@4 ~@9, ~@17 c5@3 ~@28]/2", // Cm E F5 F7
  E: "[d5,f5,g5,bb5] ~ [d5,f5,g5,bb5]@2 [d5,f5,g5]@2 [d5,f5,g5,bb5]@3 ~@3 [bb4,d5,g5] ~ [bb4,d5,g5]@2 [bb4,d5,g5]@2 [bb4,d5,g5]@3 ~@3, ~@4 bb5 ~@19", // Gm7 G7 Gm7 Gm
  F: "[[bb4,d5,f5] ~ [bb4,d5,f5]@2 [bb4,d5,f5]@2 [bb4,d5,f5]@3 ~@3 [bb4,d5,f5]@5 ~ [bb4,d5,f5]@3 ~ c5 ~ d5@2 ~ g5@6 ~@3 db5@3 ~ d5@2 bb4@2 ~@2 gb4@2, ~@23 db5@2 ~@8 d5@4 ~@11, ~@17 f5@4 ~@3]/2", // Bb
  G: "g4@2 ~@2 d4@2 ~@3 d4@2 ~ bb3@3 [a3,d4]@3 [ab3,d4]@3 [g3,eb4]@3, ~@2 d4@2 ~@2 db4@5 ~@13, ~@3 f4@10 ~@11", // D5 Abdim Cm
  H: "[~@3 [bb3,eb4,g4]@3 [c4,eb4,g4]@3 [eb4,g4]@2 ~ [db4,eb4,g4,bb4]@3 [bb3,eb4,g4]@3 [c4,eb4,g4]@3 g4@5 ~@2 [bb3,g4,bb4]@2 [eb4,g4]@3 ~@3 [db4,eb4,bb4]@3 [bb3,eb4,g4]@2 ~ [c4,eb4,g4]@2 ~@4, ~@21 bb4@3 ~@6 c4@5 ~@13, ~@33 g4@5 ~@10]/2", // Eb Cm Eb Eb7 Eb Cm Eb Eb7 …
  I: "~@6 [g3,bb3,d4,f4]@5 ~@7 [bb3,d4,g4]@5 ~", J: "~@3 [g3,bb3,d4,f4]@8 ~ [g3,bb3,f4]@5 ~ [g3,bb3,e4]@4 ~@2",
  K: "[a3,eb4]@5 ~@10 c5@2 ~@4 g4@2 ~, ~@10 g4@2 [eb4,a4]@5 ~ [eb4,bb4]@5 ~, ~@11 ab4@2 ~@11", // Adim Ebdim Eb5
  L: "[eb4,f4,a4]@2 ~ d5@3 ~@3 d5@2 ~ bb4@2 ~ bb4@2 ~ [eb4,a4,c5]@3 [d4,bb4]@3, ~@6 [e4,db5]@5 ~ d4@5 ~@7, ~@7 c5 ~@4", // F7 Adim Gm Dbm
  M: "~@3 c5@3 ~@3 d5@3 bb4@2 ~ bb4@2 ~ [eb4,a4,c5]@3 [d4,bb4]@2 ~, ~@6 [e4,db5]@5 ~ d4@5 ~@7, ~@7 c5 ~@4", // Adim Gm Dbm
  N: "~@3 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 ~ [f5,g5] f5 g5 ~", // Fsus2
  O: "[d5,f5,bb5] ~ [d5,f5,bb5]@2 [d5,f5,bb5]@2 [d5,f5,bb5]@3 ~@3 [bb4,d5,g5] ~ [bb4,d5,g5]@2 [bb4,d5,g5]@2 [bb4,d5,g5]@3 ~@3", // Bb Gm
  P: "[[bb4,d5,f5] ~ [bb4,d5,f5]@2 [bb4,d5,f5]@2 [bb4,d5,f5]@3 ~@3 [bb4,d5]@5 ~ [bb4,d5]@3 ~@3 d5@2 ~@4 g5@3 ~@6 d5@2 ~ bb4@3 ~@3, ~@12 g5@10 c5@2 ~@12 db5@5 ~@7, ~@23 db5@2 ~@9 f5@9 ~@5]/2", // Bb
  Q: "[g4@2 ~@7 d4@3 bb3@4 ~@2 [db4,g4]@3 ~ [db4,g4]@4 ~@2 [g4,eb5]@6 bb4@2 ~@3 c5@2 ~@4 g4@2 ~, ~@2 d4@2 ~@2 db4@5 ~@16 db4@5 ~@4 [db4,g4,db5]@5 ~ [c4,gb4]@5 ~, ~ f4@4 ~@11]/2", // Dbdim Cm Dbdim Cdim
  R: "[c4,g4,c5]@3 bb4@3 c5@2 ~@2 db5@2 [c4,g4,c5]@3 [bb3,bb4]@3 [g3,g4]@4 e4@2, ~@3 [db4,g4] ~@4", // C5 Bb G Dbdim
  S: "[d4,f4]@5 ~ [d4,f4,g4]@5 ~@7 [g3,bb3,d4,g4]@5 ~, bb3@5 ~@7", // Dm G7 Gm
  T: "[~@2 [d4,f4] d5 a4 d4 g4@3 f4@3 ~ f4 ~ f4 e4 ~ f4@3 ~@3 g4@5 ~ [c4,eb4]@3 ~@2 ab3 a3@4 c4@2 bb3@3 g3@3, ~@6 g4!2 ~@3 a4@5 ~ g3 ~@6]/2", // Dm Cm
  U: "[a3,eb4]@3 ~@3 [e4,db5]@4 d5@2 bb4@2 ~ bb4@2 ~@4 a4@2 ~, ~@12 d4@5 ~ [eb4,c5]@5 ~, ~@7 c5 ~@4", // Adim Dbm Cm
  V: "d4@4 c5@2 ~@3 d5@2 ~ bb4@2 ~ bb4@2 ~ [eb4,a4,c5]@3 ~ bb4@2, bb4@2 ~@4 [e4,db5]@5 ~ d4@5 ~@4 d4@3, ~@7 c5 ~@4", // Adim Dbm
  W: "~@3 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 db5@2 ~@4",
  X: "[d5,f5]@3 ~@3 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 db5@2 ~@4", // Dm
  Y: "[c5,gb5,d6]@3 ~@3 g5 gb5 g5 gb5 g5 gb5 g5 gb5 g5 gb5 g5 gb5 db5@2 ~@4", // D7
  Z: "[d5,g5,d6]@3 ~@9 [c5,a5,d6]@3 ~@6 g5 a5 [bb5,b5]", // G5 D7 Bmaj7
  AA: "c6@3 ~ d5@2 d5@3 ~ ab5@5 [d5,ab5,c6]@2 ~ [d5,g5,bb5]@5 ~, ~@3 bb5@3 a5@5 ~@13, ~@9 d5@5 ~@10", // Dm7b5 Gm
  AB: "~@4 g5@2 [d5,d6]@4 bb5@2 ~@3 d6@3 [c5,gb5]@4 g5@2, ~@3 [db5,db6]@2 ~@7 [c5,g5,c6]@5 ~@7", // D Cdim Db C5
  AC: "bb5@2 ~@2 bb4@2 [c5,c6]@3 ~ gb5@2 [db5,g5,db6]@3 ~ c5@2 [bb4,bb5]@4 g4@2, ~@3 bb5@3 ~@3 bb4@2 ~@4 [g5,c6]@2 ~@7", // C Dbdim Bb C5
  AD: "[f4,bb4,f5]@2 ~@2 ab5@2 f5 g5 [f5,g5] f5 [f5,g5] g5 d5@2 f5@2 d5@2 bb4@2 d5@2 bb4@2", // Bb5 Fsus2
  AE: "f4@2 bb4@2 f4@2 d4@2 f4@2 d4@2 bb3@2 ~ f4@2 ~ e4@4 bb3@2, ~@14 d4@2 ~@2 a4@3 ~@3",
  AF: "[a3,eb4]@4 g4@2 gb4@3 ~ [a3,eb4,f4]@4 ~@2 [g4,b4,g5]@3 ~@3 [f4,b4,d5]@2, g4 ~@7", // Adim F7 G Bdim
  AG: "[e4,bb4,db5]@4 d5@2 ~@3 d5@2 ~ bb4@2 ~ bb4@2 ~ [eb4,a4]@3 ~ [d4,bb4]@2, ~@6 [e4,bb4,db5]@5 ~ d4@5 ~@7, ~@7 c5 ~ c5@2 ~", // Bbdim Ebdim Gm Bbdim
  AH: "~@4 c5@2 e4@4 d5@2 bb4@2 c5@2 bb4@2 [eb4,a4,c5]@3 ~ bb4@2, ~@6 db5@3 ~@3 d4@5 ~@4 d4@3", // Adim
  AI: "[d5,f5,d6]@3 ~@3 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 g5 f5 db5@3 ~ d5@2", // Dm
  AJ: "[d5,g5,d6]@3 ~@7 g5 [a5,bb5] c6@2 ~@2 [c5,gb5,d6]@6 [c5,gb5,bb5]@2", // G5 Bbmaj7 D7 Cm7b5
  AK: "[d5,g5]@3 [d5,g5]@5 ~@2 d5@2 [c5,ab5,c6]@4 [d5,ab5,d6]@2 [c5,ab5,c6]@2 ~@2 [c5,gb5]@2, ~@3 d6@6 [g5,bb5]@2 ~@13", // G5 Fm Ddim Fm Cdim Gm
  AL: "[c5,g5]@4 bb5@2 ~@3 bb5@2 ~ [c5,c6]@4 [c5,bb5]@2 [c5,gb5]@4 [c5,g5]@2, ~@6 [db5,db6]@5 ~@13", // C5 C C7 Cdim C5 Db
  AM: "db6@2 ~@2 [db5,g5,db6]@2 [c5,g5,c6]@3 ~ bb5@2 [db5,db6]@4 [c5,g5,c6]@2 [bb4,g5,bb5]@2 ~ g4@3, ~@9 bb4@2 ~ g5@3 ~@9", // Dbdim C5 Db C5 Eb
  AN: "[f4,d5]@4 ~@2 f5 g5 [f5,g5] f5 [f5,g5] g5 d5@2 f5@2 d5@2 bb4@2 d5@2 bb4@2", // Dm Fsus2
  AO: "f4@2 bb4@2 f4@2 d4@2 ~ d4@2 ~ bb3@2 ~ f4@2 ~ [bb3,e4]@3 ~ [bb3,e4]@2, ~@4 f4 ~@2 d4 ~ a4@2 ~", // Bbdim
  AP: "[a3,eb4,g4]@3 ~ eb4@2 [a3,eb4,gb4]@3 ~ [a3,f4]@4 ~@2 [f4,b4]@3 ~@3 [f4,b4,d5]@2, ~@3 [a3,g4]@3 ~@3 eb4@4 ~@2 g5@3 ~@6", // Am7b5 Ebdim Dm Fdim Bdim A7
  AQ: "[e4,bb4,db5]@4 d5@2 ~@3 d5@2 ~ bb4@2 c5@2 bb4@2 [eb4,a4,c5]@3 ~ [d4,bb4]@2, ~@6 [e4,bb4,db5]@5 ~ d4@5 ~@7", // Bbdim Adim Gm Bbdim
  AR: "~@2 c5 [e4,db5]@2 d5 bb4 c5 bb4 [eb4,a4,c5]@2 [d4,bb4], ~@12 d4@5 ~@7", // Dbm Adim Gm
  AS: "~@6 [f4,d5,f5]@3 ~ [f4,d5,f5]@5 ~ d5@2 [g4,g5]@4 [bb4,d5,bb5]@2, ~@4 [f4,f5] ~, ~@6 d5 ~", // Dm G Bb F
  AT: "[~@4 [ab5,d6,f6]@2 [g5,e6]@3 ~ [gb5,eb6]@2 [f5,d6]@2 ~@2 [ab4,bb4,d5,f5]@2 [g4,db5,e5]@3 ~ [gb4,eb5]@2 [f4,d5]@2 ~@2 [d4,f4]@2 e4@4 eb4@2 d4@2 ~@2 d4@2 eb4@4 e4@2 f4@2 ~@2 d4@2 eb4@4 e4@2 f4@2 ~@2 d4@2 eb4@4 e4@2 f4@2 ~@2 d4@2 eb4@4 e4@2 f4@2 ~@4 [d4,gb4,c5]@2 ~@4, ~@6 bb6@8 ~@2 bb3@10 ~@4 bb4@8 ~@2 bb4@10 ~@2 bb4@10 ~@2 bb4@10 ~@2 bb4@11 ~@9, ~@9 bb5@4 ~@35]/4", // Ddim C Ebm Dm Bb7 Dbdim Ebm Dm …
  AU: "[c4,gb4,c5]@4 [bb3,eb4,bb4]@2 [c4,g4,c5]@2 ~ [d4,bb4,d5]@4 ~@3 [c4,gb4,d5]@2 [g4,c5]@3 ~ bb4@2, ~@9 c4@2 ~", // Cdim Eb5 C5 Gm D7 C5
  AV: "c5@2 ~@3 bb4 [c4,c5]@3 ~ [db4,g4,db5]@4 ~@2 c5@2 bb4@3 ~ [c4,g4]@2, g4@5 ~@11 [c4,g4]@5 ~@3, ~ b4!2 ~@9, ~@3 bb4@2 ~@19", // C Dbdim C5
  AW: "d4@5 bb4 db5 c5 bb4 db4@2 g4, bb4@8 ~@4 [db4,g4]@5 ~ bb4@3 ~@3", AX: "[d4,bb4]@5 ~ d4@5 ~@7 [bb3,e4,g4]@5 ~",
  AY: "~@6 [a3,eb4]@3 ~ [a3,eb4,gb4]@2 [a3,eb4,f4]@3 ~@3 [g4,b4,g5]@2 ~@2 [g4,b4,d5]@2, ~@3 g4@2 ~@7", // Adim Ebdim F7 G
  AZ: "~@4 [f4,f5]@2 [g4,g5]@4 [bb4,d5,bb5]@2 ~@3 bb5 c6 bb5 c6 bb5 c6 bb5 c6 bb5, ~@2 d5 ~@5", // F G Bb
  BA: "c6 bb5 c6 ~ [bb5,c6] bb5 c6 ~ bb5 ~ bb4@2 c5@3 ~ d5@2 eb5@3 ~ f5@2", // Bbsus2
  BB: "g5@2 ~@2 [bb5,c6] c6 bb5@3 ~ bb4@2 c5@3 ~ d5@2 eb5@3 ~ f5@2", // Bbsus2
  BC: "~@6 ab5@2 ~@2 e5@2 g5@3 ~ f5@2 d5@3 ~ c5@2, ~@4 [d5,bb5]@5 ~@15", // Gm
  BD: "bb4@2 ~@2 [bb4,d5,bb5]@5 ~ [bb4,d5,ab5]@2 [a4,f5]@3 ~ [a4,f5]@2 [ab4,d5,ab5]@4 [gb4,bb4,gb5]@2", // Bb Bb7 Dm Abdim Gb
  BE: "[g4,bb4]@3 ~ bb4@2 gb4@3 ~ [g4,bb4,eb5]@5 ~@9, ~@4 eb5@5 ~@15", // Gm Eb
  BF: "[~@4 [g4,b4,f5]@2 [gb4,d5]@3 ~ [g4,d5]@5 ~ [g4,b4,f5]@2 d5@4 g4@4 ~@4 [db5,f5]@3 ~ [c5,eb5]@2 g4@3 ~ [db5,f5]@2 [c5,eb5]@4 g4@2, ~@18 gb4@3 ~@7 g4@8 ~@4 g4@5 ~@3]/2", // G7 D G5 G7 Db Cm Db Cm
  BG: "~@2 [db5,f5] [c5,eb5]@2 g4@2 ~ [f4,d5,f5] [c5,eb5]@2 g4, ~@4 g4@5 ~@9 f4@3 ~@3", // Db Cm Dm Cm
  BH: "[c5,eb5]@3 ~ eb4@2 f4@4 ab4@2 c5@3 ~ [eb4,ab4,c5]@2 [ab4,c5]@4 eb4@2, ~@6 f4 ~", // Cm Ab
  BI: "[f4,ab4,c5] ~ eb4 c6@2 ab5 gb5@2 eb5 d5@2 c5", // Fm
  BJ: "~@4 [g4,bb4]@2 [g4,d5]@4 gb4@2 g4@3 ~ [c4,g4,d5]@6 [c4,g4,bb4]@2", // Gm G5 Csus2 C7
  BK: "[d4,g4,bb4]@3 ~ [g4,bb4,d5]@4 ~@2 gb4@2 [g4,bb4]@3 ~ [g4,bb4]@2 [d4,g4,d5]@3 ~ [c4,g4,c5]@2, c5@2 ~@3 c4@4 ~@3", // Gm G5 C5
  BL: "~@4 [d4,ab4]@2 [d4,g4,bb4]@5 ~ [ab4,c5]@3 ~ [ab4,c5]@2 [g4,bb4]@4 [d4,f4,ab4]@2, ~@4 c5@4 ~@8 d4@5 ~@3", // Ddim Gm Ab Gm Ddim
  BM: "~@4 g4@2 [a3,eb4,gb4]@4 g4@2 eb4@2 f4@2 eb4@2 [ab3,d4]@3 ~ [g3,eb4]@2, ~@12 bb3@5 ~ f4@4 ~@2", // Ebdim Abdim Cm
  BN: "~@4 [bb4,bb5]@2 [a4,a5]@3 ~ [bb4,bb5]@2 [c5,g5,c6]@3 ~ [b4,b5]@2 [c5,c6]@3 ~ [db5,db6]@2", // Bb A Bb C5 B C Db
  BO: "[d5,d6]@2 ~@2 [bb4,bb5]@2 [a4,a5]@3 ~ [bb4,bb5]@2 [c5,g5,c6]@3 ~ [d5,d6]@2 [eb5,eb6]@3 ~ [f5,f6]@2", // D Bb A Bb C5 D Eb F
  BP: "~@2 [gb5,gb6] [g5,g6] ~ [d5,d6] [f5,f6]@2 [eb5,eb6] [d5,d6]@2 [c5,c6]", // Gb G D F Eb D C
  BQ: "[b4,b5]@3 ~ [gb4,gb5]@2 [g4,g5]@4 ~@2 b4@2 ~@2 [g4,b4,g5]@2 [f4,b4,f5]@3 ~ [g4,d5,g5]@2", // B Gb G Fdim G5
  BR: "[c5,eb5]@4 ~@2 [c5,g5]@3 ~ [gb4,c5,gb5]@2 [g4,f5]@2 ~@2 [f4,eb5]@2 [g4,f5]@4 [gb4,eb5]@2, ~@6 c5 ~", // Cm C5 Gbdim G7 F7 G7 Ebm
  BS: "g4@4 [db5,g5]@2 [g4,db5,f5]@4 ~@2 [f4,db5]@3 ~@3 f5@2 ~@2 [f4,c5]@2, db5@3 ~@7 eb5@4 ~@2 [g4,db5,g5]@5 ~@3", // Dbdim Gm7b5 Db F5 Gdim
  BT: "[c5,eb5]@3 ~ eb4@2 f4@3 ~ [ab4,c5]@5 ~ eb4@2 [f4,ab4]@3 ~ [eb4,gb4,c5]@2", // Cm Ab Fm Cdim
  BU: "[~@12 gb4@2 ~ c5@2 ~ gb5@2 ~ bb5@2 ~ c6@3 ~ bb5@2 c5@3 ~ [c5,g5]@5 ~ [c5,gb5]@2 [c5,g5]@4 bb5@2, ~@14 a4@2 ~ eb5@2 ~ a5@2 ~ b5@2 ~@23]/2", // C5 Cdim C5
  BV: "[c5,c6]@4 bb5@2 [d5,d6]@4 ~@2 c5@3 ~ [c5,gb5]@2 g5@4 [d5,c6]@2, ~@10 c6@5 ~@3 c5@3 ~@3", // C D Cdim D7
  BW: "bb5@3 ~ a5@2 ab5@3 ~ c5@2 [d5,g5]@4 f5@2 bb4@4 a4@2, d5 ~@2", // G5
  BX: "ab4@4 [d5,bb5]@2 [bb4,d5]@5 ~ [ab4,d5,gb5]@4 g5@2 [bb4,eb5]@4 f5@2", // Gm Bb Abm7b5 Eb5
  BY: "eb5@2 ~ [eb5,eb6]@4 ~@3 [eb5,eb6]@2 [c5,c6]@4 bb5@2 [c5,g5]@3 ~ [c5,bb5]@2", // Eb C C5 C7
  BZ: "db5@4 d5@2 bb4@4 a4@2 [ab4,f5]@3 ~ [bb4,d5,ab5]@2 [c5,g5]@3 ~ [c5,eb5,g5]@2, ab5@5 ~@7", // Db Bb7 C5 Cm
  CA: "~@4 [gb5,gb6]@2 [g5,g6]@3 ~ [eb5,g5,eb6]@4 ~@2 [eb5,g5,eb6]@2 [d5,d6]@3 ~ [c5,c6]@2", // Gb G Eb D C
  CB: "[b4,f5,b5] ~ [g4,g5] [gb4,gb5]@2 [g4,g5] [f4,b4,f5] ~ [eb5,eb6]@2 ~ [c5,c6]", // Bdim G Gb G Fdim Eb C
  CC: "[eb5,g5,eb6]@3 ~ [b4,b5]@2 [c5,g5,c6]@3 ~ [eb5,g5,eb6]@4 ~@2 [eb5,eb6]@2 [d5,g5,d6]@4 bb5@2", // Eb B C5 Eb G5
  CD: "[[eb5,g5,eb6]@3 ~ [b4,b5]@2 [c5,g5,c6]@3 ~ db5@2 [g4,g5]@4 [ab4,db5,ab5]@2 [g4,db5,g5]@2 ~@4 [ab4,ab5]@3 ~ [gb4,gb5]@2 [g4,c5,g5]@3 ~ [c5,f5]@2 eb5@2 ~@4 d5@4 [f4,c5]@2, ~@10 [gb4,gb5]@4 ~@20 f4@5 ~ [f4,eb5]@4 ~@4, ~@12 db5@3 ~@7 c5@5 ~@21]/2", // Eb B C5 G Db5 Gdim Ab Gb …
  CE: "[f4,d5]@2 [gb4,eb5] [f4,d5]@2 [f4,c5] d5@2 [gb4,eb5] [gb4,d5]@2 c5", // Dm Ebm Dm F5 Ebm D
  CF: "[[g4,eb5]@4 bb4@2 [g4,c5]@5 ~ [g4,bb4]@3 ~ bb4@2 c5@4 ~@2 bb4@2 ~@2 [db5,bb5,db6]@2 [d5,bb5,d6]@3 ~ [c5,c6]@4 ~@2 g5@2 [d5,g5,d6]@3 ~ [c5,g5,c6]@2, bb4@3 ~@13 [g4,d5]@5 ~ g4@5 ~@13 [eb5,eb6]@4 ~@4]/2", // Cm C5 Gm Gb Gm C G5 C5 …
  CG: "[d5,bb5]@4 ~@2 a5@4 ~@2 bb5@4 ~@2 [c5,ab5]@3 ~ b4@2, ~@4 c6@4 ~@2 d5@5 ~ [db5,a5]@4 ~@4", // Gm Fm Gbm
  CH: "g5@4 a4@2 [ab4,d5]@3 ~ f4@2 [ab4,gb5]@3 ~ [bb4,g5]@3 ~@3 f5 eb5, bb4 ~@7", // Abdim Ab7 Eb
  CI: "f5 eb5 f5 ~ [eb5,f5] eb5 f5 eb5 f5 ~ [eb5,f5] eb5 ~ f5 eb5 f5 eb5 f5 eb5 f5 eb5 f5 eb5 f5", // Ebsus2
  CJ: "eb5 f5 eb5 f5 eb5 f5 eb5 f5 ~@2 c5@3 ~@3 [c5,g5]@5 ~ bb5@2, ~@8 eb6@3 ~", // C5
  CK: "[[c5,g5,eb6]@4 bb5@2 [c5,g5,c6]@5 ~ [c5,g5,bb5]@5 ~@5 [d5,f5,b5]@5 ~ [d5,f5,b5]@5 ~ [d5,f5,b5]@2 [db5,f5,b5]@4 [d5,f5,b5]@2 [db5,f5,b5]@4 d5@2]/2", // Cm C5 C7 Bdim Db7 Bdim Db7
  CL: "[eb5,g5]@2 ~@2 [d5,g5]@2 [b4,gb5]@3 ~ [c5,eb5,g5]@2 [c5,eb5,gb5]@4 g5@2 [c5,eb5,gb5]@4 g5@2, c6 ~@5", // Eb G5 B5 Cm Cdim
  CM: "[bb4,db5]@3 ~ [bb4,db5,g5]@2 [bb4,db5,gb5]@4 g5@2 [bb4,gb5]@3 ~ [bb4,g5]@2 [db5,eb5]@3 ~ [db5,f5]@2, gb5@2 ~@4 db5@2 ~ g4@2 ~", // Bbm Gdim Gb Ebm Eb Dbsus2 Db
  CN: "[c5,f5]@4 ~@2 [c5,g5]@4 c5@2 [c5,f5]@3 ~ [f4,c5,g5]@2 [f4,f5]@3 ~ [f4,c5,eb5]@2, ~@4 f4@5 ~ gb5@4 ~@10", // F5 C5 F5 Fsus2 F F7
  CO: "[gb4,c5]@4 f5@2 [gb4,c5,eb5]@3 ~@3 f5@3 ~ [gb4,c5,eb5]@2 [g4,c5]@3 ~ [f4,c5]@2, gb5@3 ~@7 [gb4,c5,gb5]@5 ~@9", // Gbdim Cdim C5 F5 Gbdim
  CP: "[g4,bb4,eb5]@3 ~ [g4,bb4]@2 [g4,bb4,c5]@3 ~ [g4,bb4]@5 ~ bb4@2 c5@2 ~@2 g4@2, ~@16 g4@5 ~@3", // Eb Gm C7 Gm
  CQ: "[g4,c5,eb5]@3 ~ [g4,c5]@2 [g4,d5]@3 ~ gb4@2 g4@3 ~ ab4@2 [a4,d5]@3 ~ [d4,c5]@2", // Cm C5 G5 D5 D7
  CR: "d4 ~@2 [g4,bb4]@2 d4@2 ~ d4 [d4,g4,bb4]@2 d4, ~@4 [d4,ab4,c5]@5 ~@7 [ab4,c5]@4 ~@4", // Gm Dm7b5 Ab
  CS: "~@6 [eb4,g4]@3 ~ eb4 ~ eb4@2 f4@2 eb4@2 [ab3,f4]@4 [g3,eb4]@2, ~@4 [d4,gb4]@4 ~@3 f4@2 ~@5 d4@3 ~@3", // Eb Db Cm D
  CT: "~@4 [bb4,bb5]@5 ~ [bb4,bb5]@2 [g4,g5]@4 [bb4,bb5]@2 [g4,g5]@4 ~@2", // Bb G Bb G
  CU: "[[bb4,bb5]@3 ~ [b4,ab5,b5]@5 ~ [c5,ab5]@4 ~ [c5,c6]@3 [d5,ab5,d6]@4 ~ [eb5,g5,eb6]@5 ~@7 [g5,g6]@4 [gb5,gb6]@2 [g5,g6]@5 ~ [f5,b5,f6]@3 [d5,b5,d6]@6 [b4,b5]@2 [a4,a5]@4 [g4,g5]@2 [a4,a5]@4 [b4,b5]@2 [c5,g5,c6]@4 [b4,b5]@2 [c5,c6]@2 ~ [d5,d6]@2 ~ [eb5,g5,eb6]@3 [d5,d6]@2 [eb5,eb6]@3 ~ [e5,e6]@2 [f5,f6]@3, ~@9 c6@4 ~@2 ab5@2 ~@79]/4", // Bb E Fm C Ddim Eb G Gb …
  CV: "~ [eb5,eb6]@2 [db5,db6]@3 ~ [bb4,bb5]@2 [g4,db5,g5]@2 ~ [eb4,c5,eb5]@2 ~ [f4,c5,f5]@3 [eb4,eb5]@2 [gb4,c5,gb5]@4", // Eb Db Bb Gdim Cm F5 Eb Gbdim
  CW: "~@2 [eb4,c5,eb5]@4 [c4,c5]@2 [eb4,c5,eb5]@2 ~@2 [gb4,c5,gb5]@2 [f4,f5]@3 [eb4,c5,eb5]@2 ~ [gb4,c5,gb5]@4", // Cm C Cm Gbdim F Cm Gbdim
  CX: "~ [eb4,eb5]@4 [f4,c5,f5]@2 ~@4 [bb4,bb5]@2 [a4,a5]@3 ~ [bb4,bb5]@2 [c5,g5,c6]@3 [eb5,g5,eb6]@2", // Eb F5 Bb A Bb C5 Eb
  CY: "~ [c5,g5,c6]@3 [eb5,g5,eb6]@2 ~@16 g5 [ab5,bb5]", // C5 Eb Absus2
  CZ: "c6@3 [d5,a5,d6]@4 ~@2 a5@2 [db5,a5,db6]@4 [d5,a5,d6]@2 [c5,ab5,c6]@5 ~@2, ~@9 [d5,d6]@4 ~@11", // D5 Gbm D5 Fm D
  DA: "~@5 [b4,ab5,b5]@3 ~ ab5@2 [b4,ab5,b5]@3 [c5,ab5,c6]@2 ~ bb4@3 [b4,ab5,b5]@4, ~@4 [c5,c6] ~@3 [ab5,bb5]@2 ~@2", // E Fm E C Absus2
  DB: "~@2 [c5,ab5,c6]@5 ~ [eb5,eb6]@2 [c5,c6]@3 ~ g5@5 [eb5,g5,eb6]@5, ~@13 [eb5,eb6]@5 ~@6", // Fm Eb C Eb
  DC: "[~ [eb5,g5,eb6]@2 [c5,g5,c6]@4 [b4,b5]@2 [c5,g5,c6]@3 ~ [c5,g5,c6]@5 [c5,g5,c6]@3 [bb4,bb5]@5 ~ [g4,db5,eb5]@5 ~@16, ~@26 g5@5 ~@17]/2", // Eb C5 B C5 Bb Eb7
})).s("gm_piano").gain(0.56).pan(0.7)

// chords · piano
const piano_2 = note(`<
  ~ A@4 B@3 C D E F G H I J K L@3 M D N O P Q R S T U V W X Y Z AA AB AC AD AE AF AG AH@2 AI Y AJ AK AB AL AM AE AN ~
  AO@3 D AP AQ AR AS AT AU@2 AV AW AV AX AY AZ BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX
  BY BZ@2 CA CB CC CD CE CF CG CH CI BM CJ CK CL CM CN CO CP CQ CR@4 CS CT CU CV CW@2 CX CY CZ
>`.pickRestart({
  A: "[~@22 [gb3,bb3,db4]@23 ~ [db3,gb3,bb3]@11 ~@2 [eb3,bb3]@5 ~ [c3,g3]@5 ~ [c3,a3]@4 ~@8 [f2,c3,f3]@4 ~@9]/4", // Gb Eb5 C5 F F5
  B: "[f4@9 ~ gb4@2 g4@9 eb4@2 ~ f4@9 ~ gb4@2 g4@9 ~@3 d4@2 ~ g4@6 f4@3 db4@3 d4@3 bb3@3 ~ gb3@2, ~@9 f4@2 ~@12 e4@2 ~@8 f4@2 ~@11 c4@2 ~@24, ~@47 db4@2 ~@23]/3",
  C: "g3@3 f3@3 db3@3 d3@3 ~@6 bb1@2 ~@4, ~@3 bb2@2 ~", D: "~@2 [g2,bb2] ~@3 [f2,bb2] ~, eb2@5 ~ bb1@5 ~",
  E: "~@6 [g2,bb2]@2 ~@4 e2@2 ~@4 f2@3 ~ a2@2, eb2@10 ~@11 g2@3", F: "bb2@2 ~@8 db3@2 d3@3 ~@7 e3@2, ~@3 c3 ~@3 eb3",
  G: "f3@11 ~ d2@3 ~@3 db2@2 ~@4", H: "[c2,c3]@5 ~ [eb3,f3,a3]@2 ~@4 [f2,eb3,f3]@4 ~@2 [bb2,eb3,g3]@2 ~@4",
  I: "[c3,f3,a3]@2 ~@2 gb3@2 g3@3 gb3@3 ~@6 f2@5 ~, ~@12 f3@11 ~", // F
  J: "[bb2,bb3]@4 ~@2 [c3,g3]@4 ~@2 [b2,ab3]@5 ~ [c3,a3]@5 ~", K: "[bb2,bb3]@4 ~@2 f2@3 ~@3 g2@4 ~@2 a2@4 ~@2",
  L: "[[bb2,f3]@4 ~@5 f4@2 ~ g4@5 ~@4 eb4@2 ~ f4@5 ~@5 gb4@2 g4@5 ~@7 d4@2 ~@4 g4@4 f4@2 ~@3 d4@2 ~ bb3@2 ~ gb3@2 ~, ~@11 gb4@2 ~@10 e4@2 ~@8 f4@2 ~@11 c4@2 ~@24, ~@47 db4@2 ~@11 db4@5 ~@7]/3", // Bb5
  M: "g3@4 f3@2 ~@3 d3@2 ~ bb2@4 ~@2 bb1@5 ~, ~@6 db3@5 ~@13",
  N: "~@6 [g2,bb2]@3 ~@3 e2@3 ~@3 f2@2 g2@2 a2@2, eb2@5 ~@7", O: "bb2@5 ~@5 db3@2 d3@5 ~@5 e3@2, ~@9 c3@2 ~@10 eb3@2 ~",
  P: "f3@11 ~ d2@5 ~ db2@4 ~@2", Q: "[c2,c3]@9 ~@3 f2@11 ~", R: "c3@4 ~@2 g3@4 ~@2 gb3@5 ~ [f2,f3]@5 ~, ~@3 c3@5 ~@4",
  S: "[bb2,bb3]@4 ~@2 [c3,g3]@5 ~ [c3,ab3]@5 ~ [c3,a3]@5 ~", // Bb C5 Fm F
  T: "[bb2,bb3]@4 ~@2 [f2,f3]@5 ~ [g2,g3]@5 ~ [a2,a3]@3 ~ bb2 f3", U: "d4@5 ~@17 d2 a2", V: "gb3@5 ~@18 [g2,d3]",
  W: "bb3@2 ~@10 [a2,gb3]@5 ~@7, ~@5 d2@4 ~@3", // D
  X: "[g2,d3]@3 ~ [d3,bb3]@2 ~@3 [bb2,f3,ab3]@4 ~@3 bb2@2 [a2,f3]@3 ~ a2@2, ~@6 a3@5 ~@4 ab3@3 ~@3 gb3@3", // G5 Gm Bb7 Dm
  Y: "[bb2,g3]@5 ~ [bb3,eb4,g4]@3 ~@3 bb1@5 ~ [bb3,eb4,g4]@3 ~@3", // Eb
  Z: "eb2@5 ~ [bb3,eb4,g4]@3 ~ eb3@4 ~ [e2,e3]@9, ~@9 eb2@4 ~@11", AA: "[f2,f3] ~@7", AB: "~@18 [db2,db3]@5 ~",
  AC: "[c2,c3]@11 ~ [f2,f3]@3 ~ [g2,d3]@3 ~@5", AD: "g3@3 ~ gb3@2 g3@3 ~ gb3@2 ~@6 f2@4 ~@2, c3@11 ~ f3@10 ~@2",
  AE: "[bb2,bb3]@3 ~@3 [c3,g3]@4 ~@2 [c3,ab3]@5 ~ [c3,a3]@4 ~@2", AF: "[bb2,bb3]@4 ~@2 f2@5 ~ g2@5 ~ a2@4 bb2@2",
  AG: "[f3,d4]@3 ~@19 d2 a2", AH: "[gb3 ~@11 bb3 ~@5 gb3@5 ~, ~@22 g2@2 ~@10 d2@3 ~@11, ~@23 d3@2 ~@10 a2@3 ~@10]/2",
  AI: "[g2,d3]@3 ~ bb3@6 a3@2 [bb2,f3,ab3]@4 ~@2 [a2,f3]@3 ~ [a2,gb3]@2, ~@4 d3@5 ~@15", // G5 Bb7 Dm D
  AJ: "eb2@5 ~ [bb3,eb4,g4]@3 ~ [eb2,eb3]@4 ~@2 eb3@2 [e2,e3]@5 ~, ~@5 eb2 ~@2", AK: "[f2,f3] ~@5",
  AL: "[c2,c3]@11 ~ f2@2 ~@2 [g2,d3,b3]@3 ~@5", AM: "g3@3 gb3@3 g3@3 gb3@3 f3@5 ~ [f2,c3,f3]@5 ~, c3@11 ~@13",
  AN: "[bb2,f3,bb3]@4 ~@2 [f2,f3]@4 ~@2 [g2,g3]@5 ~ [a2,a3]@3 ~ [bb2,bb3]@2", // Bb5 F G A Bb
  AO: "[~@4 ab3@2 g3@4 gb3@2 f3@2 ~@2 f3@2 gb3@4 g3@2 ab3@2 ~@2 f3@2 gb3@4 g3@2 ab3@2 ~@2 f3@2 gb3@4 g3@2 ab3@2 ~@2 f3@2 gb3@4 g3@2 ab3@3 ~@3 [bb2,bb3]@2 ~@4, ~@4 bb2@10 ~@2 bb2@10 ~@2 bb2@10 ~@2 bb2@11 ~ bb2@11 ~@9]/3", // Bb
  AP: "~@2 [g2,bb2] ~@3 [bb2,db3] ~, eb2@5 ~ e2@5 ~", AQ: "f2@10 ~@2 [eb2,eb3]@5 ~ [e2,e3]@5 ~",
  AR: "[f2,f3]@11 ~ db2@11 ~", AS: "c2@10 ~@2 f2@4 ~@2 [g2,b3]@5 ~", AT: "c3@11 ~ f3@5 ~ [f2,f3]@5 ~",
  AU: "[[bb2,bb3]@5 ~ [c3,g3]@5 ~ [c3,ab3]@5 ~ [c3,a3]@2 ~@2 [bb2,f3]@6 ~@2 [f2,c3,f3]@4 [bb1,bb2]@5 ~@9]/2", // Bb C5 Fm F Bb5 F5 Bb
  AV: "[bb3,f4,ab4]@23 ~", AW: "[bb3,e4,g4]@23 ~", AX: "~@4 [bb2,bb3]@4 ~@2 [bb2,bb3]@2 [c3,c4]@5 ~ [d3,d4]@3 ~ eb3@2",
  AY: "[eb3,eb4]@9 ~ [bb3,eb4]@5 ~ [g3,eb4]@2 [f3,d4]@3 ~ [eb3,c4]@2", AZ: "[d3,b3]@9 ~ [g3,b3,d4,f4]@7 ~ [c3,a3]@5 ~",
  BA: "[db3,bb3]@8 ~@2 [eb3,g3,bb3,db4]@7 ~ a2@4 ~@2", BB: "[bb2,g3]@8 ~@2 [db3,bb3]@5 ~ [db3,bb3]@2 [d3,b3]@5 ~",
  BC: "[eb3,c4]@9 ~ [eb3,ab3,c4]@7 ~ eb2@5 ~", BD: "~@2 c2 eb2@2 gb2 a2@2 c3 eb3@2 gb3",
  BE: "g3@9 ~ [bb3,eb4]@7 ~ [eb2,bb2]@5 ~", BF: "[eb3,bb3]@3 ~@7 [eb3,bb3]@3 ~@5 a3@3 ~ f2@2, ~@6 g2@8 ~@2 gb2@5 ~@3",
  BG: "[f2,d3,ab3]@7 ~@3 [ab3,bb3,d4]@7 ~@5 bb2 b2", BH: "c3@11 ~ b2@5 ~ bb2@5 ~",
  BI: "eb2@9 ~ [bb3,eb4,g4]@7 ~ [a3,gb4]@4 ~@2", BJ: "[ab3,f4]@4 ~ [ab3,bb3,d4,f4]@3 ~ [bb1,bb2]@2 ~",
  BK: "[eb2,bb2]@7 ~@3 [bb3,eb4,g4]@7 ~ [db3,bb3]@4 ~@2", BL: "[d3,b3]@8 ~@2 [g3,b3,d4,f4]@7 ~ [g2,d3,g3]@4 ~@2",
  BM: "[c3,g3]@8 ~@2 [g3,c4,eb4]@7 ~ [b2,b3]@4 ~@2", BN: "[bb2,g3,db4]@8 ~@2 [bb2,g3,db4]@7 ~ eb2@4 ~@2",
  BO: "ab2@8 ~@2 [eb3,ab3,c4]@7 ~@7", BP: "gb2@2 ~ c3@2 ~ gb3@2 ~ c4@2 eb4@2 ~@11, ~@2 a2@2 ~ eb3@2 ~ a3@2 ~@14",
  BQ: "[g3,bb3,eb4]@4 ~ [bb3,eb4,g4]@3 ~ [bb2,f3,bb3]@2 ~", BR: "[g2,d3,bb3]@4 ~ [bb3,eb4,g4]@3 ~ [eb2,gb3]@2 ~",
  BS: "[d2,f3]@8 ~@2 [ab3,bb3,d4,f4]@7 ~ [gb2,eb3]@4 ~@2", BT: "[f2,d3]@8 ~@2 [ab3,bb3,d4,f4]@7 ~ [bb2,bb3]@4 ~@2",
  BU: "[bb2,eb3,g3]@8 ~@2 [bb3,eb4,g4]@7 ~ bb2@4 ~@2", BV: "[f2,f3]@5 ~ [ab3,bb3,d4,f4]@9 ~@3 bb1@4 ~@2",
  BW: "[bb2,g3]@8 ~@2 [bb3,eb4,g4]@7 ~ [db3,bb3]@4 ~@2", BX: "[d3,b3]@8 ~@2 [g3,b3,d4,f4]@7 ~ g2@4 ~@2",
  BY: "[c3,c4]@8 ~@2 [g3,c4,eb4]@7 ~ b2@4 ~@2", // C Cm
  BZ: "[[bb2,db4]@8 ~@2 [eb3,g3,bb3,db4]@7 ~ [eb2,eb3]@2 ~@2 [ab2,eb3,ab3]@11 ~ [ab2,eb3,ab3]@5 ~ [ab2,ab3]@2 [f2,f3]@3 ~ [ab2,ab3]@2]/2", // Bbm Eb7 Eb Ab5 Ab F Ab
  CA: "[a2,a3]@9 ~ [eb3,gb3,a3,c4]@5 ~ [ab2,ab3]@2 [a2,a3]@5 ~", CB: "[bb2,bb3]@8 ~@2 [bb3,eb4,g4]@7 ~ bb1@4 ~@2",
  CC: "eb2@8 ~@2 [bb3,eb4,g4]@7 ~ e2@4 ~@2", CD: "f2@8 ~@2 [ab3,bb3,d4,f4]@7 ~ [gb2,eb3]@4 ~@2",
  CE: "[f2,d3]@8 ~@2 [ab3,bb3,d4,f4]@7 ~ [bb2,f3]@4 ~@2", CF: "[bb2,eb3,g3]@7 ~@3 [bb3,eb4,g4]@7 ~ [bb2,f3,bb3]@5 ~",
  CG: "[bb2,eb3,g3]@8 ~@2 [bb3,eb4,g4]@7 ~ bb1@4 ~@2", CH: "eb2@8 ~@2 [bb3,eb4,g4]@7 ~ [g2,eb3]@4 ~@2",
  CI: "[f2,d3]@8 ~@2 [g3,b3,d4,f4]@7 ~ [g2,g3]@4 ~@2", // Dm G7 G
  CJ: "[g2,eb3,bb3]@8 ~@2 [g2,eb3,bb3]@2 [g2,eb3,bb3]@5 ~ eb2@4 ~@2", // Eb
  CK: "ab2@8 ~@2 [eb3,ab3,c4]@7 ~ [ab2,d3,g3]@3 ~ [ab2,ab3]@2", // Ab G Ab
  CL: "[a2,a3]@7 ~@3 [eb3,gb3,a3,c4]@4 ~@2 [ab2,ab3]@2 [a2,a3]@5 ~", // A Ebdim Ab A
  CM: "[bb2,bb3]@7 ~@3 [bb3,eb4,g4]@6 ~@2 [bb1,f2]@4 ~@2", // Bb Eb Bb5
  CN: "[eb2,bb2]@8 ~@4 bb3@3 ~@3 a3@3 ~ [f2,eb3]@2, ~@10 g2@5 ~ gb2@5 ~@3", // Eb5 F7
  CO: "[f2,d3,ab3]@7 ~@3 [f3,bb3]@7 ~ [bb1,bb2]@3 ~ [b1,b2]@2", CP: "[c2,c3]@7 ~@3 [b1,b2]@7 ~ [bb1,bb2]@5 ~",
  CQ: "[eb2,eb3]@5 ~ [bb2,f3,bb3]@3 ~@3 [a2,a3]@5 ~ [ab2,ab3]@3 ~@3", // Eb Bb5 A Ab
  CR: "[[bb2,f3]@4 ~@2 [bb2,f3,bb3]@2 ~@4 [a2,a3]@5 ~ [bb2,f3,bb3]@2 ~@4 bb2@5 [bb3,eb4,g4]@2 ~@4 [bb2,bb3]@5 ~ [bb3,eb4,g4]@2 ~@4 [b2,b3]@5 ~ [g3,b3,d4,f4]@2 ~@3 [d3,d4]@5 ~ [g3,b3,d4,f4]@2 ~@4 [c3,g3,c4]@5 ~ [g3,c4,eb4]@2 ~@4 [c3,g3,c4]@5 [b2,f3,b3]@3 ~@3 [bb2,f3,bb3]@3, ~@23 g3@5 ~@68]/4", // Bb5 A Bb5 Eb Bb Eb B G7 …
  CS: "~@3 [eb3,g3,bb3,db4]@2 ~@4 [eb2,eb3]@5 ~ [eb3,g3,bb3,db4]@2 ~@3 [ab2,eb3,ab3]@4", // Eb7 Eb Eb7 Ab5
  CT: "~@2 [eb3,ab3,c4]@3 ~@3 [eb3,ab3,c4]@5 ~ [ab2,eb3,ab3]@3 ~@3 [a2,eb3,a3]@4", // Ab Ab5 Adim
  CU: "~ [eb3,gb3,a3,c4]@2 ~@2 [ab2,eb3,ab3]@3 ~@3 [ab2,ab3]@2 [a2,a3]@3 ~@3 [bb2,bb3]@5", // Ebdim Ab5 Ab A Bb
  CV: "~ [bb3,eb4,g4]@2 ~@3 [bb2,g3]@5 ~ [bb3,eb4,g4]@2 ~@4 [g2,g3]@5 ~", // Eb G
  CW: "[[g3,eb4,g4]@3 [g2,g3]@3 ~@3 [g2,g3]@2 [gb2,gb3]@3 ~@3 [f2,f3]@4 ~@2 [bb3,d4,f4]@2 ~@4 [bb1,bb2]@5 ~ [bb3,d4,f4]@2 ~@3 [d2,d3]@5 ~ [ab3,bb3,d4,f4]@2]/2", // Cm G Gb F Bb D Bb7
  CX: "~@4 [bb1,f2,bb2]@4 ~@2 [bb3,d4,f4]@2 ~ [eb3,eb4]@3 ~@3 [eb3,eb4]@2 [d3,d4]@3", // Bb5 Bb Eb D
  CY: "~@3 [c3,c4]@4 ~@2 [bb2,bb3]@3 ~ [eb3,eb4]@3 ~@2 [eb3,eb4]@3 [bb2,bb3]@3", CZ: "~@2 eb3 [eb2,eb3]@5 ~@16",
})).s("gm_piano").gain(0.48).pan(0.3)

stack(piano, piano_2)