To start learning Avalon - Adonai chords, delve into these chords sequence to get the song's feel: Eb, Ab, Cm, Db, Ab, E and Eb. I suggest starting at a calm pace of 65 BPM, and as you gain confidence, approach the song's BPM of 130. Set the capo considering your vocal range and favored chords, aligned with the key: Ab Major.