Sian - besides Ar Gyfer, we're doing Henffych Iti, Baban Sanctaidd, and Beth Yw'r Golau Mawr a Glan -- assuming we practice enough for all three!! I have Caneuon Ffydd - so I do Ganwyd Iesu, which is a nice sing-along. You wouldn't happen to have (or know where I might get) guitar chords for other carols in Caneuon Ffydd?
Never too early to start working on Christmas songs, although I usually wait 'til the last moment.
Chris