// It Keeps Right On A-Hurtin' — Johnny Tillotson
// 102 bpm, 4/4, key A major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(102/4)

const chords = arrange(
  // intro (4 bars)
  [4, "<E7!2 [A@2 D@2] [A@2 E@2]>"],
  // verse (16 bars)
  [16, "<A A7 D!2 A!2 E7!2 A A7 D!2 E7!2 [A@2 D@2] A>"],
  // chorus (16 bars)
  [16, "<E7!2 D!2 E7!2 D A!2 A7 D!2 E7!2 [A@2 D@2] [A@2 E@2]>"],
  // verse (16 bars)
  [16, "<A A7 D!2 A!2 E7!2 A A7 D!2 E7!2 [A@2 D@2] A>"],
  // chorus (17 bars)
  [17, "<E7!2 D!2 E7!2 D A!2 A7 D!2 E7!2 [A@2 D@2] [D@2 A Bm7] A>"],
)
const bassline = arrange(
  [4, "<e2!2 [a2@2 d2@2] [a2@2 e2@2]>"],
  [16, "<a2!2 d2!2 a2!2 e2!2 a2!2 d2!2 e2!2 [a2@2 d2@2] a2>"],
  [16, "<e2!2 d2!2 e2!2 d2 a2!3 d2!2 e2!2 [a2@2 d2@2] [a2@2 e2@2]>"],
  [16, "<a2!2 d2!2 a2!2 e2!2 a2!2 d2!2 e2!2 [a2@2 d2@2] a2>"],
  [17, "<e2!2 d2!2 e2!2 d2 a2!3 d2!2 e2!2 [a2@2 d2@2] [d2@2 c#2 b2] a2>"],
)

// 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)