Incidentally, if you like this song, you should strongly consider buying the album on which it appears, as $0.50 from the sale of each album will go to Susan G. Komen for the Cure.
Sara Bareilles and Ingrid Michaelson - Winter Song (MP3, 6.2MB)
Previous Advent posts:
2003: Moonless Darkness Stands Between
2004: Black Madonna and Child
2005: Joy to the World
2006: Song of the Angel at the Nativity
2007: Madonna and Child with St. John the Baptist and St. Mary Magdalene