Day 23. Christmas Eve (Sarajevo 12/24) - Trans-Siberian Orchestra
Before this song The Carol of the Bells was just a boring old Christmas song. Trans-Siberian Orchestra managed to take what made that song great and make it amazing. Now this is a regular christmas cover by most bands, I would bet anything had this never been recorded this wouldn't be the case.
If you've never gotten to see Trans-Siberian live I highly recommend it.