Anyway, gem of a black metal band... Erlösung.
As you can no doubt tell from their website... we may not be dealing with geniuses here. But, they did record Carol of the Bells in black metal format. (No idea why my formatting got all weird here. Double spacing things.)
So, here we go! Black metal Carol of the Bells!
If you go to their website from above you can download this whole album for free.
The title of the album is German, but I think these gentlemen are from Georgia.
There may or may not be an update tomorrow, I have to go out of town for a funeral.