The Garfield show. Christmas capers

Garfield, always on the lookout for an opportunity to stuff his face, wants to sing at people's doors so they will give him candy. But he's not much of a singer and nobody gives him a thing. The Nermal/Odie duet does pretty well, so Garfield decides to accompany them so he can make the most of their success and cream off some of their goodies. But how can he join their group when he can't sing? He's going to have to come up with some good ideas i...