VIDEO: Josh Krajcik Sings "Come Together" by The Beatles on The X Factor USA, December 14, 2011

Josh rocks out this Beatles song, chosen for him by the fans.

VIDEO: Melanie Amaro Sings "Hero" by Mariah Carey on The X Factor USA, December 14, 2011

The fans choose this Mariah Carey song for Melanie's first performance of the night.

VIDEO: Chris Rene Sings "Fly" on The X Factor USA, December 14, 2011

Fans choose this Sugar Ray song for Chris Rene's first performance of the night.

VIDEO: Marcus Canty Sings "I'll Make Love to You" on The X Factor USA, December 14, 2011

Fans choose this Boyz II Men song for Marcus's first performance of the night.

'X Factor': Justin Bieber and Stevie Wonder to duet [Update]

[Update: The performance is being taped on Wed. However it won't air until next week during the finale.]Fans of "The X Factor" are about to get a special pre-Christmas gift on Wednesday's (Dec. 14) episode. Pop mega-star Justin Bieber and music legend Stevie Wonder are set to take the stage.Sources close to the production have confirmed that the two are slated to do a duet midway through the semi-final performance. The songs are thought to be "Santa Claus is coming to town" and "The Christmas Song." It's also entirely possible that a certain past contestant from "The X Factor" who is infatuated with Bieber might just take the stage. These are the biggest stars yet to join the show for a musical performance. Previous singers include Lenny Kravitz, Mary J. Blige and Rihanna.Bieber and Wonder have an interesting history together. Back when Bieber was still 13-year-old and posting videos on YouTube, one of the songs...

'X Factor': Finalists imagine life after the show, what to do with $5 million

It's down to the Final Four on "The X Factor." Within a matter of days, one of the remaining contestants will win the grand prize of $5 million and a recording contract.The road to this point has been filled with struggle, angst and elation. And the hardest part is yet to come. However each of these singers took a moment to think about what they're looking forward to after the show is over and what's the first thing they'd buy with their new-found wealth.Here are their responses... Melanie Amaro Win or lose, what are you looking forward to most when the show is done? Starting my career, getting in the studio and working hard on my music. Also spending time with my best friend and making myself happy. What is the first thing you'll buy with your $5 million? Buy my mom a house and start my career. I'd probably buy (her) a house out...

'X Factor': Florence + the Machine, Nicole Scherzinger set as musical guests

If fans of "The X Factor" aren't satisfied by the final four contestants, they'll have a couple great musical guests to keep them entertained. And one of those performers won't have to travel very far to hit the stage.The singing competition announced that Florence + the Machine and "X Factor" judge Nicole Scherzinger will perform during the results show on Dec. 15. This comes just a week after hit makers Lenny Kravitz and Mary J. Blige sang.Scherzinger, herself a former reality show winner, was the lead singer for Eden's Crush and later The Pussycat Dolls. She will be singing a tune from her forthcoming solo project.Florence + the Machine are the Grammy-winning indie rock band. The London-based group is currently promoting their second album "Ceremonials.""The X Factor" results show airs on Thursday (Dec. 15) at 8 p.m. ET....