Chorus Christmas Concerts Info Sheet
Ceremony of Carols - https://www.youtube.com/watch?v=-IEuxKCB6o8
no learning tracks in SATB
Ceremony of Carols has midi prep on CyberBass - https://cyberbass.org/Major_Works/Britten_B/Britten__CeremonyOfCarols_SATB.htm
Or there's John Fletcher Music Files - but you need to be signed in to access files - https://johnfletchermusic.org/brittenb-ceremony-of-carols/