To learn Raphaël - Sur Mon Dos chords, your practice should emphasize these chord progressions: Bb, D, F, C, F, Bb, C, Bb, F, D, Dm and F. A strategic approach would be to train at 42 BPM initially, and then accelerate to the song's tempo of 86. Adjust the capo based on your vocal range and chord preference, keeping the song's key of Bb Major in mind.