Rocks Off likes to believe that Christmas is such a merry holiday, even some of Satan's most stalwart servants can't help but get into the act. Of course, it could be that heavy metal musicians record Christmas music for the same reason as Mariah Carey: Because there's a crapload of money to be made. Whatever their motives, even metalheads can put away the devil horns and celebrate the birth of our savior without feeling like total pusses thanks to this collection of ten of the best heavy metal Christmas carol covers ever crooned!

10. Twisted Sister - O Come All Ye Faithful

Did the melody of "We're Not Gonna Take It" ever remind you of "O Come All Ye Faithful?" Us too! Twisted Sister payed tribute to the anthemic carol behind their biggest hit with this makeup-slathered cover version in 2006. Did they need to record an entire Christmas album to go with it? No, but they did anyway, DAD!

9. August Burns Red - Carol Of The Bells

Few Christmas carols are as metal as "Carol of the Bells," and rightfully so: The ultimate ostinato tune was originally based on a folk chant known in Ukrainian as "Shchedryk." Metalcore enthusiasts August Burns Red added a breakdown to this yuletide classic in 2008.

8. Dez Fafara & Friends - "Rudolph the Red-Nosed Reindeer"

Coal Chamber and DevilDriver frontman Dez Fafara makes no bones about being a big holiday guy, sporting a large "Nightmare Before Christmas" tattoo on his chest. In 2009, he paired gun-for-hire guitarist Doug Aldrich with Rob Zombie alums Blakso and John Tempesta to record the shoutiest version of "Rudolph the Red-Nosed Reindeer" there ever was or will be.

7. Kamelot - We Three Kings

Symphonic power metallers Kamelot can sometimes veer a little too far into Trans-Siberian Orchestra territory in their usual music, so it was no great surprise to find them covering this classic Christmas carol on their 2000 release, The Expedition. What is a little surprising is how easy it is to get away with playing this version in church.

6. Queensryche - White Christmas

Metallic progsters Queensryche have always followed their own muse without regard for fans' expectations or desires. That eclectic impulse had led to some of the genre's most daring songwriting as well as some of its weakest (lookin' at you, Dedicated to Chaos). It also led to this perfectly perfunctory version of Irving Berlin's wintry classic.