// Dancing Machine — The Jacksons
// 109 bpm, 4/4, key Ab minor. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(109/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<[~ Ab5 ~ Ab5] [~ Cb5 Db5@2] Abm11!2>"],
  // verse (8 bars)
  [8, "<Abm7!8>"],
  // interlude (4 bars)
  [4, "<[Ebm7@2 E7@2] [Fm7b5@2 Db7@2] Abm7!2>"],
  // verse (8 bars)
  [8, "<Abm7!8>"],
  // solo (8 bars)
  [8, "<~!8>"],
  // chorus (8 bars)
  [8, "<[~ Ab5 ~ Ab5] [~ Cb5 Db5@2] Abm11!2 [~ Ab5 ~ Ab5] [~ Cb5 Db5@2] Abm11!2>"],
  // outro (8 bars)
  [8, "<Abm7 Db7 [Gbadd9@2 Db7@2] Ab7 Abm7 Db7 [Gbadd9@2 Db7@2] Ab7>"],
  // instrumental (8 bars)
  [8, "<Abm7 Db7 [Gbadd9@2 Db7@2] Ab7 Abm7 Db7 [Gbadd9@2 Db7@2] Ab7>"],
  // outro (8 bars)
  [8, "<Abm7 Db7 [Gbadd9@2 Db7@2] Ab7 Abm7 Db7 [Gbadd9@2 Db7@2] Ab7>"],
  // fadeout (6 bars)
  [6, "<Abm7 Db7 [Gbadd9@2 Db7@2] Ab7 Abm7 Db7>"],
)
const bassline = arrange(
  [4, "<[~ ab2 ~ ab2] [~ b2 db2@2] ab2!2>"],
  [8, "<ab2!8>"],
  [4, "<[eb2@2 e2@2] [f2@2 gb2@2] ab2!2>"],
  [8, "<ab2!8>"],
  [8, "<~!8>"],
  [8, "<[~ ab2 ~ ab2] [~ b2 db2@2] ab2!2 [~ ab2 ~ ab2] [~ b2 db2@2] ab2!2>"],
  [8, "<ab2 f2 [gb2@2 f2@2] ab2!2 f2 [gb2@2 f2@2] ab2>"],
  [8, "<ab2 f2 [gb2@2 f2@2] ab2!2 f2 [gb2@2 f2@2] ab2>"],
  [8, "<ab2 f2 [gb2@2 f2@2] ab2!2 f2 [gb2@2 f2@2] ab2>"],
  [6, "<ab2 f2 [gb2@2 f2@2] ab2!2 f2>"],
)

// 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)