For the last few years, Amy has run her own Advent Calendar in which she records cover songs suggested by her fans and then posts them as free downloads. She'll throw a few originals in along the way. Interestingly, she doesn't get too many Christmas song requests (apparently). But, when she does, she records some of the sweetest Christmas music this side of Heaven. Her 2013 Advent Calendar included "Little Drummer Boy" and John Lennon's "War Is Over" (well, that's how she titled it). On her 2012 Advent Calendar, she covered "Stop The Calvary". And, in 2011, she offered her versions of "2000 Miles", "Last Christmas" and "Let It Snow". And all of her Advent songs are still available for free download.
For this years' Theoretical Girl Advent Calendar, Chris Rea's "Driving Home For Christmas" is the only holiday song I see. Then again, she's still got a bit more than a week to spring a new one on us. In any case, there is just a ton of beautiful tracks that Amy has given her fans and the rest of us. And it's worth hearing her interpretations of non-holiday material as well. Better get to it.