Good luck with your choice. If neither of the suggestions I made are correct, have a look at this this link, there are several more that might fit:-
http://www.hymnsandcarolsofchristmas.com/HTML/index_of_carols_h.htm
I never object to "cryptic" and "difficult/challenging" clues that need to be solved but, I feel that too many quiz questions have become so far obscure, these days - that they become that weak with a result that they are, at best misleading, and at worst, they are simply incorrect! Or maybe, it's, just me?