lea michelle cannonball x factor Lea Michele debuting 'Cannonball' on 'X Factor' finale, Sierra Deaton is excited as you areGet ready for some FOX network synergy: “Glee” star Lea Michele, who is releasing her debut album, “Louder,” in March 2014, will perform her first single, “Cannonball,” on “The X Factor” finale Thursday (Dec. 19).

The singer/actress announced the news on Twitter Sunday (Dec. 15), prompting finalist Sierra Deaton, of the frontrunner duo Alex and Sierra, to tweet an incredulous “WWWWHHHHAAAAATTTTTTT?!?!? MY HEART.”

The big two-hour finale will also feature performances by One Direction, Mary J. Blige, and judge Paulina Rubio. The winner will be decided from the three remaining acts: folky duo Alex and Sierra, rocker Jeff Gutt, and Latin pop star Carlito Olivero.

“Cannonball” will make its official radio debut on New York’s Z100 on Monday (Dec. 16). Hear the Sia-penned song (and Michele’s delightful Celine Dion-esque pronunciation of the word “cannonball”) below:

Posted by:Jean Bentley