To learn Maná - En El Muelle De San Blas chords, your first step should be understanding these chords - G, Em, A, D, G, A, D and Em in sequence. For a smooth transition, initiate your practice at 49 BPM and gradually match the song's pace of 98 BPM. To match your vocal range and chord inclination, adjust the capo in line with the key: D Major.