If you haven't seen it, yet, here's the tracklist for the upcoming GLEE Christmas Album (Volume 2)...
1. All I Want For Christmas Is You
2. Extraordinary Merry Christmas
3. Santa Baby
4. Christmas Eve With You
5. The Little Drummer Boy
7. Do You Hear What I Hear?
8. Let It Snow
9. Santa Claus Is Coming To Town
10. Christmas Wrapping
11. Blue Christmas
12. Do They Know Itís Christmas?
No idea who sings which song, though the rumor is that Chris Colfer (Kurt) sings "Santa Baby"!