To start learning Sir Neville Marriner, Academy Of St Martin In The Fields - (Eternal Rest Give To Them, O Lord) Requiem, K. 626 - Introitus chords, centre your learning around these elemetal chords sequence: A, Dm, E, A, Dm and A. Set your pace at 66 BPM initially and then sync up with the song's BPM of 134. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: F Major.