Video (Christmas 2009 #1): A Winter Song

I believe that there are 29 days until Christmas. I think I want to share a song a day until then. I'm going to start with this amazing song that has been stuck in my head since my sister shared it with me yesterday.
Winter Song by Sara Bareilles and Ingrid Michaelson

Sorry I think there is an ad at the beginning of this video.
Let's build this 29 song list together. What Christmas/Holiday song would you want to share this 2009 holiday season?