'Glee' Releases Two Song Performances From Tuesday's Christmas Episode (Video)

Good Sue?

Looking for a way to keep herself occupied during her first holiday after the loss of her sister, Sue (Jane Lynch) will look to help the homeless.

Fox's Glee gets into the holiday spirit Tuesday with "Extraordinary Merry Christmas," it's second holiday-themed episode in its three-season run.

Compared with last year's seven-song "A Very Glee Christmas," next week's episode is high on the holiday musical spirit, featuring 11 tracks, including two original performances.

PHOTOS: 'Glee's' Unforgettable Guest Stars

Check out Mercedes (Amber Riley) leading a New Directions version of Mariah Carey's "All I Want for Christmas Is You," and Finn (Cory Monteith) fronting a cover of Band Aid's 1984 famine relief anthem "Do They Know It's Christmas?" below.

Expect amazing couple moments from Blaine (Darren Criss) and Kurt (Chris Colfer), Rachel (Lea Michele) and Finn, Mike (Harry Shum Jr.) and Tina (Jenna Ushkowitz) as well as general amazement from Sue Sylvester (Jane Lynch).

In addition, 100 percent of the net monies from Glee's sales of the 1984 track that featured U2's Bono and the Police's Sting will benefit The Band Aid Trust. Check out the two musical legends discussing the impact the song has had on their careers in the clip below.

Glee's final original episode of the year airs Tuesday at 8 p.m. on Fox. Glee returns after with new episodes after its holiday hiatus on Jan. 17.

Email: Lesley.Goldberg@thr.com; Twitter: @Snoodit

PHOTOS: 'Glee' 300th Musical Performance Celebration

'Glee's' Mark Salling Teases Puck-Quinn-Shelby Triangle

'Glee': Jonathan Groff Returns, Another New Directions Defector and More Spoilers