// If You Really Love Me — Stevie Wonder
// 121 bpm, 4/4, key F major. Source: mcgill.
// Generated by strudelify. One cycle = one bar.
setcpm(121/4)

const chords = arrange(
  // intro (8 bars)
  [8, "<[Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] [Gm7@2 Gm F] Eb Gm7>"],
  // chorus (12 bars)
  [12, "<[Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] Gm7 [Bb^7 Am7@2 Gm7] F^7 Em7b5 A7b9>"],
  // verse (16 bars)
  [16, "<D^7 A7b9 D^7 A7b9 Dm!2 Bo [Bbm9@2 Eb9@2] F^7!2 Am7 D7b9 [G13@3 G7b13] G9 C5!2>"],
  // chorus (12 bars)
  [12, "<[Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] Gm7 [Am7@2 Dm7@2] Gm7 [Bb^7 Am7@2 Gm7] F^7 Em7b5 A7b9>"],
  // verse (16 bars)
  [16, "<D^7 A7b9 D^7 A7b9 Dm!2 Bo [Bbm9@2 Eb9@2] F^7!2 Am7 D7b9 [G13@3 G7b13] G9 C5 [C5@2 Db5@2]>"],
  // chorus (10 bars)
  [10, "<[Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7 [Cb^7 Bbm7@2 Abm7] Db7sus>"],
  // chorus (8 bars)
  [8, "<[Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7>"],
  // fadeout (7 bars)
  [7, "<[Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2] Abm7 [Bbm7@2 Ebm7@2]>"],
)
const bassline = arrange(
  [8, "<[a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@3 f2] eb2 c2>"],
  [12, "<[a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@2 c2@2] [bb2 a2@2 g2] f2 g2 a2>"],
  [16, "<d2 a2 d2 a2 d2 c2 b2 [bb2@2 eb2@2] f2!2 a2 d2 g2!2 c2!2>"],
  [12, "<[a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@2 c2@2] [a2@2 d2@2] [g2@2 c2@2] [bb2 a2@2 g2] f2 g2 a2>"],
  [16, "<d2 a2 d2 a2 d2 c2 b2 [bb2@2 eb2@2] f2!2 a2 d2 g2!2 c2 [c2@2 db2@2]>"],
  [10, "<[bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2] [b2 bb2@2 ab2] db2>"],
  [8, "<[bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2]>"],
  [7, "<[bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@2] [ab2@2 db2@2] [bb2@2 eb2@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)