// Unforgettable — Natalie Cole
// 74 bpm, 4/4, key Bb major. Source: mcgill + 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: sustain pedal (CC 64) lengthens the held notes
// note: Full arrangement: all 74 bars on a 48-step grid, each part at one level. Source detail keeps the original performance.
setcpm(74/4)

// 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.

// bass · acoustic bass · "Bass"
const bass = note(`<
  ~ A@2 B C D E F G H I J K L M N O P Q R S D E F G H I J K L M N O T U V W X Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AM
  D E F G H I J K L M N O T AN@6 ~@2
>`.pickRestart({
  A: "[f2@29 ~@3 c2@4 c3@40 ~@8 c2 ~@11, ~@5 c3]/2", B: "c3@5 ~ b2@4 ~ b2", C: "bb2@16 ~@4 bb2@4 c3@7 ~ g2@4 c2@9 ~@3",
  D: "f1@24 c2@23 ~", E: "f2@6 f1@5 ~", F: "ab1@24 ab2@23 ~", G: "ab1 ab2", H: "g1@23 ~ g2@14 ~@2 g2@4 d2@4",
  I: "g1@4 g2@3 ~", J: "g1@24 d2@23 ~", K: "g2@10 d2@2 g1@6 g2@3 ~@3", L: "c2@21 ~@3 c2@23 ~",
  M: "eb2@22 ~@2 eb2@19 ~@5", N: "bb1@23 ~ d2@24", O: "g1@24 g2@17 ~@7", P: "c2@22 ~@2 c2@21 ~@3",
  Q: "c2@23 ~ c2@12 g2@12", R: "c2@22 ~@2 c2@23 ~", S: "db2@11 ~", T: "c2@11 ~ c2@11 ~", U: "~@12 f1@11 ~, f2@47 ~",
  V: "bb1@19 ~@5 g1@23 ~", W: "eb2@8 ab1@7 ~", X: "db2@24 ab2@23 ~", Y: "db3@6 db2@5 ~", Z: "e2@24 e3@23 ~",
  AA: "e2 e3", AB: "eb2@23 ~ eb3@14 ~@2 eb3@4 bb2@4", AC: "eb2@4 eb3@3 ~", AD: "eb2@24 bb2@23 ~",
  AE: "eb3@10 bb2@2 eb2@6 eb3@3 ~@3", AF: "ab2@21 ~@3 ab2@23 ~", AG: "b2@22 ~@2 b2@19 ~@5", AH: "gb2@23 ~ bb2@24",
  AI: "eb2@24 eb3@17 ~@7", AJ: "ab2@22 ~@2 ab2@21 ~@3", AK: "ab2@23 ~ ab2@12 eb3@12",
  AL: "db2@16 db3@4 ab2@4 db2@17 ~@3 db2@4", AM: "c3@14 ~@2 c3@4 g2@3 ~ c2@11 ~ c3@8 c2@3 ~",
  AN: "[~@48 f1 ~@46 bb1@21 gb1@22 ~ e2@18 ~@3 ab1@42 bb1@83 ~@3, f2@43 ~@101]/6",
})).s("gm_acoustic_bass").gain(0.52)

// chords · string ensemble 2 · "Strings"
const string_ensemble_2 = note("<~@5 A@4 B@3 C@8 D@2 ~ E@2 F@8 G@3 H@5 I@8 J@6 K L F@8 M@5 N@3 ~>".pickRestart({
  A: "[~@35 [c4,f4]@12 [a4,c5]@16 [f4,a4]@4 d4@4 [c4,e4]@22 ~@16 e5@4 f5@6 d6@6 db6@6 db5@6 d5@6 bb5@20 db6@4 b5@19 ~@6, ~@67 f4 ~@27 [ab3,b3,e4]@94 ~@3]/4", // F5 Am F C E
  B: "[~@36 a5@7 f5@4 d5@17 bb4@4 g4@21 ~@22 [b5,e6]@4 [a5,d6]@4 [b5,e6]@16 a5@4 g5@4 [a3,a5], [g3,bb3,d4]@95 [g3,e4]@49]/3", // E5 D5 E5 A Gm C
  C: "[~@23 g3@20 ~@4 [bb3,c4,eb4,g4,c5]@48 f5@24 gb5@23 ~ [bb3,f4,a4,d5]@23 ~ [eb4,f4,ab4,c5]@23 ~ [b3,e4,b4]@47 ~@13 [d6,gb6]@6 [c6,e6]@6 [a4,gb5]@12 [bb4,g5]@12 [d5,g5,bb5]@18 [e5,a5,c6]@6 ~@12 [b3,eb4]@9 ~@3 [g3,bb3,c4,e4]@48 [b3,e4], ~@95 [db5,bb5]@47 ~@97 [g3,bb3,d4]@83 ~@62, ~@311 [d5,g5,bb5]@23 ~@50]/8", // Cm7 Bbmaj7 Fm7 E5 D C D Eb …
  D: "[~@23 bb3@6 b3@6 [bb3,d4]@4 [c4,e4]@4 [d4,f4]@4 [f3,a3,c4,e4]@39 ~@10, ~@47 [f2,g4]@46 ~@3]/2", // Bb C Dm Fmaj7 Fsus2
  E: "[~@13 e5@4 f5@6 d6@6 db6@6 db5@6 d5@6 bb5@20 db6@4 b5@19 ~@6]/2",
  F: "[~@36 a5@7 f5@4 d5@17 bb4@4 g4@21 ~@18 g5@6 a5@6 f6@6 e6@12 g5@6 db6@18 e6@6 [g3,d6]@21 ~@3 [bb3,c4,eb4,g4,c5,g6]@48 f5@24 gb5@23 ~ [bb3,f4,a4,d5]@23 ~ [eb4,f4,ab4,c5]@23 ~ [b3,e4,b4,b5]@47 ~ [d5,g5,bb5], [g3,bb3,d4]@95 e4@89 ~@55 [db5,bb5,gb6]@49 ~@96, ~@95 g3@48 a3@25 ~@119 f6@50 ~@47]/8", // G5 Cm7 Bbmaj7 Fm7 E5 Gm Gb
  G: "[~@23 [e3,g3,bb3,d4,a5]@22 ~@2 [bb4,c5,eb5,g5]@24 [eb4,g4,bb4,f5]@23 ~ f4@12 d5@6 f5@5 ~ a5@4 bb5@3 ~ g5@4 a5@4 bb5@4 c6@4 db6]/3", // Em7b5 Cm7 Eb
  H: "[~@11 f6@6 eb6@6 ab5@21 ~@3 [db3,ab3,f4,c5]@94 ~@2 [e4,g4,c5]@94 ~@2 [f4,bb4,db5]]/5", // Dbmaj7 C Bbm
  I: "[~@11 [c5,eb5]@11 ~ [gb4,bb4,db5,f5]@71 ~ [f4,a4,c5]@91 ~@29 eb6@24 d6@24 a6@24 [db5,ab6]@48 [eb4,g4,db5,eb5,g5,g6]@44 ~@4 gb6, ~@191 [ab3,b3,eb4,gb4,bb4]@48 [b3,d4,gb4,d5]@47 ~ [bb4,f5]@46 ~@51]/8", // Cm Gbmaj7 F Db5 Eb7 Abm7 Bm Bb5
  J: "[~@35 d6@12 f6@24 eb6@10 ~@2 ab6@11 ~ bb6@48 [a5,a6]@36 [ab5,ab6]@11 ~ [f3,a3,c4,e4]@36 c7@12 c6@41 ~@8, ~@191 [f2,g4]@46 ~@51, ~@191 g6@35 ~@62]/6", // A Ab Fmaj7 Fsus2
  K: "~@12 e5@5 g5@6 d6@6 ~ g5@8 ab5@8 e6@2", L: "~@7 bb5@8 b5@8 g6@12 gb6@12 f6",
  M: "[~@23 [e3,g3,bb3,d4,a5]@22 ~@2 [c5,eb5,g5]@45 ~@3 [f3,c4,f4,a4,d5]@40 ~@7 [bb2,bb3,f4,bb4,d5]@22 [gb2,db4,f4,ab4]@22 [e2,b4,e5,ab5]@21 [eb5,ab5,c6]@20 ~@13, ~@69 ab2@11]/5", // Em7b5 Cm Dm7 Bb Db E Ab
  N: "[~@3 [bb2,c4,d4,f4,c6,f6]@32 ~@13]/3", // Bb
})).s("gm_string_ensemble_2").gain(0.24).pan(0.4)

// chords · piano
const piano = note(`<
  ~ A B C D E@2 F@2 G@2 H I J K L M N@2 O P Q@2 F@2 G@2 H I J K L M R@2 S T U@2 V@2 W@2 X Y Z AA AB AC AD@2 AE AF Q@2
  F@2 G@2 H I J K L M AG AH@8
>`.pickRestart({
  A: "[f3,a3,c4,e4,a4]@8 [f3,a3,c4,e4,g4,bb4]@3 ~ [f3,a3,c4,e4,g4,bb4]@7 ~ [f3,a3,c4,e4,a4,c5]@3 ~ [f3,a3,c4,e4,a4,c5]@19 ~@5", // Fmaj7
  B: "[f4,g4]@8 [f4,g4,a4,c5,e5]@4 [f4,g4,a4,c5,e5]@5 ~@3 [f4,g4,bb4,d5]@4 [f4,g4,bb4,d5]@19 ~@5, [bb3,d4,bb4]@17 ~@31", // Fsus2 Fmaj7 Gm7 Bb
  C: "[f4,a4,c5,e5]@7 ~ [f4,g4,bb4,d5,f5]@4 [f4,g4,bb4,d5,f5]@6 ~@2 [a4,c5,e5]@4 [b3,d4,f4,ab4,b4,d5]@8 [b3,d4,f4,ab4,b4,e5]@3 ~ [b3,d4,f4,ab4,b4,e5]@6 ~@2 [b3,d4,f4,ab4,b4,f5]@3 ~, ~@10 g5 ~@13", // Fmaj7 Gm7 Am Bdim E7 Bdim
  D: "[g3,bb3,d4,f4,g4]@8 [g3,bb3,d4,f4,bb4,c5]@3 ~ [g3,bb3,d4,f4,bb4,c5]@6 ~@2 [g3,bb3,d4,f4,bb4,d5]@4 [bb3,c4,f4,g4,d5]@7 ~ [bb3,c4,f4,a4,d5]@3 ~ [bb3,c4,f4,a4,d5]@6 ~@2 [bb3,c4,f4,bb4,d5]@3 ~, bb4@5 ~@43", // Gm7 Bbmaj7 Bb
  E: "[~@36 e6@3 f6@3 e6@3 a5@3 c6@35 ~@13, [f3,a3,c4,e4,g4,a4,c5]@85 ~@11]/2", // Fmaj7
  F: "[~@73 e6@3 f6@3 ~ db6@3 e6@9 ~@4, [ab2,ab3,b3,e4]@89 ~@7]/2", // E
  G: "[~@31 d5@10 f5@2 d5@2 bb4@2 g4@22 ~@27, [g2,g3,bb3,d4,f4,a4]@89 ~@7]/2", H: "[f3,a3,b3,e4]@11 ~",
  I: "~@13 e6@2 g6@2 gb6@4 f6@3 e6@6 d6@10 c6@4 b5@2 ~@2",
  J: "bb3@8 ~@10 c5@5 ~, [c3,c6]@23 ~, g4@12 g4@11 ~, eb4@10 eb4@13 ~, ~@8 bb3@15 ~", // C
  K: "bb4@12 ~@8 bb5@3 ~, [eb2,bb3,eb4,gb4]@23 ~, ~@12 bb4@11 ~, ~@16 eb5@7 ~", // Ebm
  L: "[bb3,f4,bb4,d5]@20 ~@5 c5@5 f4@6 ~@6 c4@5 ~, ~@36 ab3@11 ~", // Bb
  M: "[g3,d4]@22 ~@14 f4@9 ~@3, [g4,b4]@15 ~, f4@3 ~, ~@28 g3@17 ~@3, ~@32 d4@13 ~@3", // G5 G
  N: "[d6@4 e6@4 c6@28 ~@48 [g3,g4,b4,eb5]@11 ~, [c3,bb3,c4,e4,g4]@35 ~@13]/2", O: "[bb3,c4,g4,bb4,c5,e5]@43 ~@5",
  P: "[f3,ab3,db4,f4,ab4,b4]@7 ~", // Db7
  Q: "[~@36 e6@3 f6@3 e6@3 a5@3 c6@24 c6@8 a5@8 g5@6 ~@2, [f3,a3,c4,e4,g4,a4,c5]@85 ~@11]/2", // Fmaj7
  R: "[bb3@24 ~@4 b4@4 c5@3 ~ d5@4 f5@4 ~@4 [f2,f3,c4,eb4,g4,bb4]@22 ~@26, [c3,c4,eb4,g4,bb4]@11 ~@13, d5@36 ~@8 f4@39 ~@13, ~@6 [e3,g3,bb3,d4]@5 ~@13]/2", // Cm7 Em7b5
  S: "[bb2,f3,a3,c4,d4,f4]@20 ~@4 [g2,g3,bb3,d4,f4,a4]@21 ~@3", // Bbmaj7 Gm7
  T: "~@18 eb4@5 ~@5 [eb3,eb4]@4 [e3,e4]@4 [f3,f4]@4 [gb3,gb4]@4 [g3,g4]@3 ~, [eb2,gb3,bb3,db4]@11 ~@13, ~@6 f4@5 ~@13", // Eb E F Gb G Ebm7
  U: "[f4@8 [db4,f4,bb4]@3 ~ [db4,f4,bb4]@6 ~@2 [eb4,f4,ab4,c5]@4 ~@24 ab5@35 ~@13, [db3,f3,ab3,c4]@85 ~@11, [eb4,ab4]@20 ~@4 [eb4,f4,ab4,c5]@21 f5@6 ~@45, ~@12 c6@2 c6@3 ~@15, ~@13 db6@4 ~@15]/2", // Bbm Fm7 Dbmaj7 Ab5 Fm7
  V: "[[e4,g4,c5]@37 ~@36 c6@3 db6@3 ~ a5@3 c6@9 ~@4, [e2,e3,g3,c4]@89 ~@7]/2", // C
  W: "[~@31 bb4@10 db5@2 bb4@2 gb4@2 eb4@22 ~@27, [eb2,eb3,gb3,bb3,db4,f4]@89 ~@7]/2", X: "[db3,f3,g3,c4]@11 ~",
  Y: "~@13 c6@2 eb6@2 d6@4 db6@3 c6@6 bb5@10 ab5@4 g5@2 ~@2",
  Z: "gb3@8 ~@10 ab4@5 ~, [ab2,ab5]@23 ~, eb4@12 eb4@11 ~, b3@10 b3@13 ~, ~@8 gb3@15 ~", // Ab
  AA: "gb4@12 ~@8 gb5@3 ~, [b1,gb3,b3,d4]@23 ~, ~@12 gb4@11 ~, ~@16 b4@7 ~", // Bm
  AB: "[gb3,db4,gb4,bb4]@20 ~@5 ab4@5 db4@6 ~@6 ab3@5 ~, ~@36 e3@11 ~", // Gb
  AC: "[eb3,bb3]@22 ~@14 db4@9 ~@3, [eb4,g4]@15 ~, db4@3 ~, ~@28 eb3@17 ~@3, ~@32 bb3@13 ~@3", // Eb5 Eb
  AD: "[bb5@4 c6@4 ab5@28 ~@48 [eb3,eb4,g4,b4]@11 ~, [ab2,gb3,ab3,c4,eb4]@35 ~@13]/2", // Ebaug Ab7
  AE: "[gb4,ab4,b4,eb5]!2 ~@4, [db3,db4] ~@2", // Abm7 Db
  AF: "[bb3,d4,f4,a4]@8 [bb3,d4,f4,a4]@8 [bb3,d4,f4,g4]@7 ~ [bb3,d4,f4,a4]@12 [bb3,e4,ab4]@7 ~@5", // Bbmaj7 Gm7 Bbmaj7 Bbm7b5
  AG: "bb3@24 ~@4 b4@4 c5@3 ~ d5@4 f5@4 f4@4, [c3,c4,eb4,g4,bb4]@11 ~, d5@3 ~, ~@6 [e3,g3,bb3,d4]@5 ~", // Cm7 Em7b5
  AH: "[[c4,eb4,g4]@58 ~@53 f4@5 ~@17 ab4@3 ~@3 e5@2 ~@14 e5@5 ab5@5 ab5@5 ab5@3 ~@3 ab5@22 ~@5 [bb4,c5,f5]@10 [bb4,c5,f5]@12 [bb4,c5,f5]@13 ~ f5@13 ~ [d4,f4,c5]@96 ~@35, [f2,bb4]@62 ~@38 f4@11 ~@11 ab4@11 ~@11 e5@11 ~@5 [f5,c6]@10 [f5,c6]@27 ~@6 [bb3,d4,f4,d5]@50 ~@131, f3@54 ~@40 [bb4,d5]@11 ~ [bb4,d5]@10 ~ [db5,f5]@11 [db5,f5]@9 ~@2 [ab5,b5]@10 [ab5,b5]@10 ~@79 [bb4,c5]@14 [bb3,bb4,d5,f5]@96 ~@36]/8", // Cm Bbsus2 Dm7 Bb5 F5 Bb Db Abm …
})).s("gm_piano").gain(0.52).pan(0.7)

// chords · vibraphone · "Vibes"
const vibraphone = note(`<
  ~ A B C D ~@6 E F ~@8 G H ~@4 E F ~@6 I J K@2 L@2 M@2 N O P Q R S T U ~ V G H ~@4 E F ~@6 W@2 X@2 Y@2 ~
>`.pickRestart({
  A: "c5@3 ~ d5 ~ d5@3 ~ e5 ~ e5@11 ~", B: "d5@7 ~ e5@2 ~@2 e5@6 ~@2 f5@2 ~@2 f5@21 ~@3",
  C: "e5@6 ~@2 f5@2 ~@2 f5@5 ~@3 g5@3 ~ d5@6 ~@2 e5@2 ~@2 e5@6 ~@2 f5@3 ~",
  D: "bb4@7 ~ c5@2 ~@2 c5@5 ~@3 d5@2 ~@2 g4@6 ~@2 a4@2 ~@2 a4@6 ~@2 bb4@3 ~", E: "[e4,g4,b4]@10 ~@2 [e4,a4,c5]@11 ~",
  F: "~ d4@3 ~@2 db4@6 c4@5 ~@7 [d4,b4]@20 ~@4, g4@12 g4@5 ~@7, ~@9 b3@8 ~@7", G: "[f4,a4]@19 ~@5 a4@11 ~ c5@8 d5@4",
  H: "e5@5 ~", I: "~@24 a4@3 ~ bb4@3 ~ g4@3 ~ a4@4 bb4@3 ~ c5@4", J: "db5@6 f5@3 eb5@3 ab4@10 ~@2",
  K: "[ab4@7 ~ bb4@3 ~ bb4@6 ~@2 c5@3 ~ c5@35 ~ bb4@11 ~ c5@11 ~ db5@12]/2", L: "[c5@9 ~@7]/2",
  M: "[[bb4,db5]@4 ~@4 [c5,eb5]@4 eb5@5 ~@3 [db5,f5]@4 [db5,f5]@34 ~@2 db5@11 ~ eb5@12 ab5@12, ~ c5 ~@6]/2", // Bbm Cm Db
  N: "f5@3 ~", O: "~@4 eb4@2 [bb3,g4]@5 ~, ~ g3 ~, ~@16 ab3@2 ~@6 eb4@11 ~@13",
  P: "gb4@5 ~ ab4@4 ~@2 ab4@5 ~ gb4@4 ~@2", Q: "gb4@8 ~@4 ab4@4 ~@4 a4@8 ~@4 ab4@4 gb4@7 ~@5",
  R: "db4@10 ~@2 eb4@8 ~@4 eb4@10 ~@2 db4@9 ~@3", S: "db4@9 ~@3 eb4@4 ~@4 f4@9 ~@3 eb4@3 ~ db4@6 ~@6",
  T: "bb4@5 ~ eb5@5 ~ bb4@9 ~ ab4@2", U: "bb4@9 ~@3 eb5@4 ~@4 bb4@19 ~@9",
  V: "[bb3,d4,f4,a4]@23 ~@13 [bb3,e4,ab4]@7 ~@5", // Bbmaj7 Bbm7b5
  W: "[~@46 d5@6 bb4@5 ~ d5@5 bb4@5 ~ f5@5 db5@5 ~ f5@5 db5@3 ~@3 [e5,ab5]@5]/2", // E
  X: "[[b4,e5]@5 [e5,ab5]@5 ~ [b4,e5]@4 ~ [ab5,c6]@5 [f5,ab5]@5 c6@5 ~ [f5,ab5]@21 ~@5 bb5@37 ~, ~@26 ab5 ~@69]/2", // E5 E E5 Ab Fm
  Y: "[~@23 c6@10 ~ f6@11 d6@13 ~@38]/2",
})).s("gm_vibraphone").gain(0.48).pan(0.3)

// drums · kick
const kick = s("bd").struct(`<
  ~ A B C D E F E F E F E F E F E F E F E G E F E F E F E F E F E F E F E F E F E F E F E F E F E F E F E F E F E F E F
  E F E F E F E H ~@7
>`.pickRestart({
  A: "x ~@7 x!2 ~@2", B: "~@8 x!2 ~@2", C: "x ~@4 x!2 ~@4 x", D: "x ~@4 x!2 ~@5", E: "x!2", F: "x ~@5 x ~@4 x",
  G: "x ~@10 x", H: "x",
})).gain(0.64)

// drums · rim
const rim = s("rim").struct("<~@5 [~ x ~ x]!15 ~ [~ x ~ x]!45 ~@8>").gain(0.8)

// drums · hihat
const hihat = s("hh").struct("<A B@3 C D@15 B D@44 E F ~@7>".pickRestart({
  A: "x!4", B: "~ x ~ x", C: "~@3 x ~@4 x!3 ~", D: "x ~ x!2 ~ x!2 ~ x!2 ~ x", E: "x ~ x!2 ~ x!2 ~ x!3 ~", F: "~ x ~@2",
})).gain(0.32)

// drums · open hat
const open_hat = s("oh").struct("<~@4 [~@11 x] ~@15 x ~@44 [~@11 x] x ~@7>").gain(0.56)

// drums · ride
const ride = s("rd").struct("<~ A B C D ~@13 E F G ~@45 F ~@7>".pickRestart({
  A: "x ~@7 x!2 ~@2", B: "~@8 x!2 ~@2", C: "x ~@4 x!2 ~@4 x", D: "x ~@4 x!2 ~@5", E: "~@3 x", F: "x",
  G: "x ~@4 x ~@2 x ~@3",
})).gain(0.8)

stack(bass, string_ensemble_2, piano, vibraphone, kick, rim, hihat, open_hat, ride)