// Space Oddity — David Bowie
// 69 bpm, 4/4, key E major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(69/4)

const chords = arrange(
  // fadein (8 bars)
  [8, "<F Em F Em F Em F Em>"],
  // verse (6 bars)
  [6, "<C Em C Em Am D>"],
  // verse (9 bars)
  [9, "<C Em C Em Am D ~!2 C7>"],
  // chorus (21 bars)
  [21, "<C E7 F [Fm@2 C@2] F [Fm@2 C@2] F C E7 F [Fm@2 C@2] F [Fm@2 C@2] F F^7 Em F Em [Bb@2 Am@2] [G@2 F@2] [F@2 ~@2]>"],
  // instrumental (8 bars)
  [8, "<[C F G A]!2 F^7 Em A C D E7>"],
  // chorus (20 bars)
  [20, "<C E7 F [Fm@2 C@2] F [Fm@2 C@2] F G E7 Am D C G F^7 Em F^7 Em [Bb@2 Am@2] [G@2 F@2] [F@2 ~@2]>"],
  // instrumental (7 bars)
  [7, "<[C F G A]!2 F^7 Em A C D>"],
  // outro (4 bars)
  [4, "<E!4>"],
  // fadeout (8 bars)
  [8, "<E!8>"],
)
const bassline = arrange(
  [8, "<e2!8>"],
  [6, "<c2 e2 c2 e2 [a2@2 g2@2] f#2>"],
  [9, "<c2 e2 c2 e2 [a2@2 g2@2] f#2 ~!2 c2>"],
  [21, "<c2 e2 f2 [f2@2 c2@2] f2 [f2@2 c2@2] f2 c2 e2 f2 [f2@2 c2@2] f2 [f2@2 c2@2] f2!2 e2!3 [bb2@2 a2@2] [g2@2 f2@2] [f2@2 ~@2]>"],
  [8, "<[c2 f2 g2 a2]!2 f2 e2 a2 c2 e2!2>"],
  [20, "<c2 e2 f2 [f2@2 c2@2] f2 [f2@2 c2@2] f2 g2 e2 [a2@2 g2@2] f#2 c2 g2 f2 e2 f2 e2 [bb2@2 a2@2] [g2@2 f2@2] [f2@2 ~@2]>"],
  [7, "<[c2 f2 g2 a2]!2 f2 e2 a2 c2 e2>"],
  [4, "<e2!4>"],
  [8, "<e2!8>"],
)

// 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)