// Best Thing That Ever Happened To Me — Gladys Knight & The Pips
// 94 bpm, 4/4, key A major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(94/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<A!2 [D^7@2 Dm6@2] A^7>"],
  // verse (16 bars)
  [16, "<A^7!2 Bm7!2 Esus E7 A^7 A7 D^7 [E7sus@2 E7@2] A^7!2 F#m [F#m@2 B9@2] E9sus E7>"],
  // chorus (18 bars)
  [18, "<A^7 A7 D^7!2 Bm7 E7 A^7 A7 D^7 E7 A^7 D^7 Bm7 E7 A^7 D^7 Bm7 E7>"],
  // trans (4 bars)
  [4, "<A^7 Bm A^7 [F#7sus@2 F#7@2]>"],
  // verse (16 bars)
  [16, "<B^7!2 C#m7!2 F#sus F#7 B^7 B7 E^7 [F#7sus@2 F#7@2] B^7!2 G#m [G#m@2 C#9@2] F#9sus F#7>"],
  // chorus (24 bars)
  [24, "<B^7 B7 E^7!2 C#m7 F#7 B^7 B7 E^7 F#7 B^7 E^7 C#m7 F#7 B^7 E^7 C#m7 F#7 B^7 E^7 C#m7 ~ F#7 ~>"],
  // coda (5 bars)
  [5, "<B!2 [E^7@2 Em6@2] B^7 ~>"],
)
const bassline = arrange(
  [4, "<[a2@2 g#2@2] [g2@2 f#2@2] [d2@2 e2@2] a2>"],
  [16, "<a2!2 b2!2 e2!2 a2!2 d2 e2 a2!2 [f#2@2 f2@2] [e2@2 b2@2] e2!2>"],
  [18, "<a2!2 d2!2 b2 e2 a2!2 d2 e2 a2 d2 b2 e2 a2 d2 b2 e2>"],
  [4, "<a2!3 f#2>"],
  [16, "<b2!2 c#2!2 f#2!2 b2!2 e2 f#2 b2!2 [g#2@2 g2@2] [f2@2 c#2@2] f#2!2>"],
  [24, "<b2!2 e2!2 c#2 f#2 b2!2 e2 f#2 b2 e2 c#2 f#2 b2 e2 c#2 f#2 b2 e2 c#2 ~ f#2 ~>"],
  [5, "<[b2@2 a#2@2] [a2@2 g#2@2] [e2@2 f#2@2] b2 ~>"],
)

// chords · gm_piano
const keys = chord(chords).voicing().s("gm_piano").gain(0.8)
// bass · gm_electric_bass_finger
const bass = note(bassline).s("gm_electric_bass_finger").gain(0.9)
// drums
const drums = s("[bd hh] [sd hh] [bd hh] [sd hh]").gain(0.8)

stack(keys, bass, drums)