It was adapted into a live stage show in 2008, and Paul Williams wrote some new songs for that. Maybe that’s where it’s from?
JEDIT : Wikipedia says it was written for the tv special but was never used.
https://en.wikipedia.org/wiki/Emmet_Otter’s_Jug-Band_Christmas_(TV_Program)And I can’t believe I still don’t have a copy of this…
Then get it.