Let's start jamming Revi - Blue chords, practice the chord sequence Ebm, Gb, Abm, Gb, Db, Abm, Gb, Ebm, B, Gb, Ab and Gb. Start with a comfortable 45 BPM and as you become proficient, aim for the song's BPM of 90. To match your vocal range and chord inclination, adjust the capo in line with the key: Ab Minor.