To learn Dueto Bertin Y Lalo - Claudio Bahena chords, anchor your practice on these foundational sequence of chords - Ab, Bb, Eb, Bb, Eb and Ab. For a smooth transition, initiate your practice at 55 BPM and gradually match the song's pace of 111 BPM. With an eye on the song's key A Major, set the capo that best suits your vocal range.