To start learning Abba - Sos chords, build your understanding on these basic chords - Eb, F, Bb, Db, Gm, Bb, F, C, A, Dm and A in sequence. To build a solid grasp, start slowly at 62 BPM and then match the original tempo of 125 BPM. Adapt the capo setting considering your vocal range, with reference to the key: F Major.