My oddest impulse purchase to date

I saw this as I was checking out of Best Buy today.

Hi, welcome to my wassailing party. Oh, look, is that mistletoe you're standing under? I guess we should get it on.

Someone had discarded it on a shelf and I picked it up to see what it was. Clearly I couldn't put it down, just in case.

It turns out that most of the songs are delivered pretty straight, although God Rest Ye Merry Gentlemen might be my new favorite song ever. With Idol's growl it sounds subversively aggressive.