// Heartaches — Bachman-Turner Overdrive
// 121 bpm, 4/4, key E major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(121/4)

const chords = arrange(
  // verse (16 bars)
  [16, "<D!2 A!2 D!2 A!2 E!2 D!2 A!2 B!2>"],
  // chorus (8 bars)
  [8, "<E [G@3 A] E [G@3 A] E [G@3 A] B!2>"],
  // verse (16 bars)
  [16, "<D!2 A!2 D!2 A!2 E!2 D!2 A!2 B!2>"],
  // chorus (8 bars)
  [8, "<E [G@3 A] E [G@3 A] E [G@3 A] B!2>"],
  // chorus (8 bars)
  [8, "<E [G@3 A] E [G@3 A] E [G@3 A] B!2>"],
  // verse (16 bars)
  [16, "<D!2 A!2 D!2 A!2 E!2 D!2 A!2 B!2>"],
  // chorus (8 bars)
  [8, "<E [G@3 A] E [G@3 A] E [G@3 A] B!2>"],
  // chorus (8 bars)
  [8, "<E [G@3 A] E [G@3 A] E [G@3 A] B!2>"],
  // outro (24 bars)
  [24, "<E [G@3 A] E [G@3 A] E [G@3 A] B!2 E [G@3 A] E [G@3 A] E [G@3 A] B!2 E [G@3 A] E [G@3 A] E [G@3 A] B!2>"],
)
const bassline = arrange(
  [16, "<d2!2 a2!2 d2!2 a2!2 e2!2 d2!2 a2!2 b2!2>"],
  [8, "<e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2>"],
  [16, "<d2!2 a2!2 d2!2 a2!2 e2!2 d2!2 a2!2 b2!2>"],
  [8, "<e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2>"],
  [8, "<e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2>"],
  [16, "<d2!2 a2!2 d2!2 a2!2 e2!2 d2!2 a2!2 b2!2>"],
  [8, "<e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2>"],
  [8, "<e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2>"],
  [24, "<e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2 e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2 e2 [g2@3 a2] e2 [g2@3 a2] e2 [g2@3 a2] b2!2>"],
)

// 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)