In addition to the previously issued "Welcome Christmas," the episode will feature Chris Colfer (Kurt) and Darren Criss (Blaine) duetting on the old chestnut "Baby, It's Cold Outside" (written by Frank Loesser, of Guys and Dolls and the soon-to-be-revived How to Succeed…); Lea Michele (Rachel) taking lead on the plaintive "Merry Christmas, Darling"; and Tina (Jenna Ushkowitz), Amber Riley (Mercedes) and Colfer tackling "We Need a Little Christmas," from the Jerry Herman musical Mame.
To get an audio peek at some of the "Glee" holiday music, look below: