// Twistin  The Night Away (From "Innerspace") — Rod Stewart
// 136 bpm, 4/4, key D major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(136/4)

const chords = arrange(
  // fade in (7 bars)
  [7, "<D!7>"],
  // verse (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // verse (8 bars)
  [8, "<D!2 Bm!2 G!2 A D>"],
  // verse (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // verse (8 bars)
  [8, "<D!2 Bm!2 G!2 A D>"],
  // solo (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // B (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // verse (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // verse (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // chorus (8 bars)
  [8, "<D!4 G!2 A D>"],
  // chorus (8 bars)
  [8, "<D!4 G!2 A D>"],
  // bridge (4 bars)
  [4, "<D Bm A!2>"],
  // solo (2 bars)
  [2, "<~!2>"],
  // verse (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // fade out (8 bars)
  [8, "<D!2 Bm!2 G!2 A!2>"],
  // verse (1 bars)
  [1, "<D>"],
)
const bassline = arrange(
  [7, "<d2!7>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [8, "<d2!2 b2!2 g2!2 a2 d2>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [8, "<d2!2 b2!2 g2!2 a2 d2>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [8, "<d2!4 g2!2 a2 d2>"],
  [8, "<d2!4 g2!2 a2 d2>"],
  [4, "<d2 b2 a2!2>"],
  [2, "<~!2>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [8, "<d2!2 b2!2 g2!2 a2!2>"],
  [1, "<d2>"],
)

// 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)