Accidentally singing the lyrics the Tam Lin lyrics to the God Rest Ye Merry Gentlemen tune (and vice versa) has given me a fondness for it I never had before.

I am delighted to know that can be done! It is used to open the Christmas interlude in A Tale of Two Cities (1935), so I always associate it with Ronald Colman's Sydney Carton propping up a lamppost.

I am glad you had a delightful-sounding holiday!

Thank you!