Theoretical Girl's Advent Calendar 2012
In what has become one of my favorite Christmas traditions, Theoretical Girl is posting a song a day up to Christmas as part of her Advent Calendar series. Some of them are Christmas-y, some of them are just good old-fashioned covers, but they're all really cool and free. This is her fourth year doing it, I believe; I first stumbled onto her way back in 2009. Check out her Soundcloud page and get thee to downloading. She's on Day 8 as of this posting. I might actually post the previous three projects as .rars if I can get motivated at some point.
In any case, you can also keep up with the current Advent Calendar by stopping by the Theoretical Girl Facebook page and/or you can follow her Twitter feed. Her album, Divided, is very good as well, if you like what you're hearing and want to check out her original material.