there is a rock-xmas-song by slate, but i don't know the name. should be easy to find out!

> I'm compiling a CD of some XMas music. What I am looking for is songs with some hard rock/heavy metal in it such as Carol of the Bells by the Transiberian Orchestra featuring Metallica. It is instrumental and features Metallica on the guitars. There are no lyrics but it's a great tune. Do you know of any other songs like this? I hear them all the time in holiday commercials but never know who composes them. Any help would be appreciated!!