To jam and learn Arca - Riquiquí chords, your primary focus should be mastering these chords sequence: Fm, Ab, B, Gb, B, A, Ab, B and Ab. For a smooth transition, initiate your practice at 45 BPM and gradually match the song's pace of 91 BPM. Given the song's key of D Major, adjust the capo to align with your vocal range and chord preference.