After hearing it Wednesday night, I was impressed by how respectfully Denny Lloyd covers Greg Lake's "I Believe In Father Christmas." My brother pointed out that it isn't a frequently covered song, and I think that's for good reason. When you compose an original song about learning a truism you might rather not know yet wishing everyone an enjoyable Christmas and new year nevertheless, that tune should be covered only sparingly, if at all.
Lake's version remains the definitive one, but Lloyd also captures the tempered, melancholy tone in his vocals appropriately.