To learn K.O.S - (Kumbia of Saints) Eras chords, your first step should be understanding these chords - C#m, A, D, G, A, D, Bm, A, B and E in sequence. I suggest starting at a calm pace of 80 BPM, and as you gain confidence, approach the song's BPM of 160. With the song's key of D Major, set your capo to fit your vocal range and chord choice.