To learn Patsy Cline - (Single Version) Crazy chords, your first step should be understanding these chords - Ab, G, Cm, F, Bb, G, Bb and Cm in sequence. Ease into the song by practicing at 35 BPM before reaching the track's full tempo of 72 BPM. Adapt the capo setting considering your vocal range, with reference to the key: C Minor.