I'm really not into cakes, last time I made a proper cake was about 5 years ago but necessity has forced my hand and last week, this was my first ever attempt at a decorated cup cake.
I reckon your mate needs a medal not help :-) If he likes his Christmas songs in the same styles as his baking then every chance some of Kevin "Bloody" Wilson's stuff will be right up his street - very NSFW or for the easily offended...