To learn Libera - Sanctus chords, grasp the musical fabric of the song with this sequence - Ab, Bb, Cm, Gm, Ab, Eb, Bb, Eb, Cm and Eb of chords. Start with a comfortable 73 BPM and as you become proficient, aim for the song's BPM of 147. Tune your capo to accommodate your vocal range, referencing the song's key: Eb Major.