To learn Mocca - Happy chords, focus on the sequence of these chords: Bbm, Am, D, B, Ab, Am, Bm, Bbm, D and G. To build a solid grasp, start slowly at 79 BPM and then match the original tempo of 158 BPM. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: A Minor.