To start learning Mägo De Oz - El Pacto chords, delve into these chords sequence to get the song's feel: F, C, Gm, Bb and F. For a smooth transition, initiate your practice at 54 BPM and gradually match the song's pace of 109 BPM. With an eye on the song's key Bb Major, set the capo that best suits your vocal range.