I actually found myself listening to my Lovecraftian Christmas albums more than the regular ones last year, and have now reached the point where I think of the eldritch editions as the "normal" lyrics!
Then again, the most sanity-blasting holiday music experience I've ever had was listening to 30 seconds of Bob Dylan's rendition of The Little Drummer Boy, so maybe I'm just trying to protect what little of my coherent mind remains.....