What does the cast of Glee want for Christmas? The answer is made as clear as can be in the following performance video, courtesy of next week's "Extraordinary Merry Christmas." The answer?

YOU! Watch Mercedes and company in action now:

Glee Cast - All I Want for Christmas

As always, this track and all others covered on Tuesday will be available to download via our Glee music section. Those other singles will be:

• Darren Criss and Chris Colfer on "Let It Snow"
• Damian McGinty on "Blue Christmas"
• Darren Criss and Lea Michele on "Extraordinary Christmas"
• Naya Rivera on "Santa Baby"
• Heather Morris on "Christmas Wrapping"
• Lea Michele on "River"

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.