// Golden Years — David Bowie
// 111 bpm, 4/4, key Gb major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(111/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<[Gb@2 Fb7@2] Gb [Gb@2 Fb7@2] Gb>"],
  // chorus (8 bars)
  [8, "<[Gb@2 Fb@2]!8>"],
  // verse (8 bars)
  [8, "<[Gb@2 Fb@2]!8>"],
  // chorus (2 bars)
  [2, "<[D@2 Bm@2]!2>"],
  // chorus (4 bars)
  [4, "<[Gb@2 Fb@2]!4>"],
  // verse (8 bars)
  [8, "<[Gb@2 Fb@2]!8>"],
  // chorus (6 bars)
  [6, "<[D@2 Bm@2]!2 [G@2 C@2] [A@2 C#o@2] [Bm@2 Em7@2] [~@2 ~@2]>"],
  // chorus (4 bars)
  [4, "<[Gb@2 Fb@2]!4>"],
  // verse (12 bars)
  [12, "<[Gb@2 Fb@2]!12>"],
  // chorus (2 bars)
  [2, "<[D@2 Bm@2]!2>"],
  // chorus (4 bars)
  [4, "<[Gb@2 Fb@2]!4>"],
  // verse (8 bars)
  [8, "<[Gb@2 Fb@2]!8>"],
  // chorus (6 bars)
  [6, "<[D@2 Bm@2]!2 [G@2 C@2] [A@2 C#o@2] [Bm@2 Em7@2] [~@2 ~@2]>"],
  // outro (21 bars)
  [21, "<[Gb@2 Fb@2]!21>"],
)
const bassline = arrange(
  [4, "<[gb2@2 e2@2] gb2 [gb2@2 e2@2] gb2>"],
  [8, "<[gb2@2 e2@2]!8>"],
  [8, "<[gb2@2 e2@2]!8>"],
  [2, "<[d2@2 b2@2]!2>"],
  [4, "<[gb2@2 e2@2]!4>"],
  [8, "<[gb2@2 e2@2]!8>"],
  [6, "<[d2@2 b2@2]!2 [g2@2 c2@2] [a2@2 c#2@2] [b2@2 e2@2] [~@2 ~@2]>"],
  [4, "<[gb2@2 e2@2]!4>"],
  [12, "<[gb2@2 e2@2]!12>"],
  [2, "<[d2@2 b2@2]!2>"],
  [4, "<[gb2@2 e2@2]!4>"],
  [8, "<[gb2@2 e2@2]!8>"],
  [6, "<[d2@2 b2@2]!2 [g2@2 c2@2] [a2@2 c#2@2] [b2@2 e2@2] [~@2 ~@2]>"],
  [21, "<[gb2@2 e2@2]!21>"],
)

// 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)