To learn Ls Jack - Carla chords, grasp the musical fabric of the song with this sequence - A, Bm, Em, A, G, Em, A, D, Bm and A of chords. To master the tempo, it's wise to start at 67 BPM before aiming for the song's 135 BPM. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: D Major.