'X Factor': R. Kelly, Avril Lavigne and Alanis Morissette to perform with finalists

It's the finals on "The X Factor" on Wednesday (Dec. 21). And as part of the competition, the remaining three contestants must perform duets with big-time recording artists.

Zap2it has secured those duets and the names of the songs they're slated to perform. Here they are:

• Melanie Amaro & R. Kelly - "I Believe I Can Fly"
• Chris Rene & Avril Lavigne - "Complicated"
• Josh Krajcik & Alanis Morissette - "Uninvited"

Thursday (Dec. 22) the show will announce the winner of the $5 million prize.

So Zappers, which duet are you looking most forward to?