I have been following this new band for a while now, and not to be bias (because my friend is this bassist), but these guys are pretty awesome.  They just signed to Hopeless records a few months ago. This is the same record biz' who also happened to sign All Time Low, Avenged Sevenfold, Silverstein, ect.  They recently released this cover of one of the most beloved Christmas carols ever.  They do a nice job of not slaughtering it with needless add-ons, but do add there own style, keeping it from seeming like they just lip-synched to an all women's choir.  Enjoy!