Melanie Amaro & R. Kelly
Josh Krajcik & Alanis Morissette
Chris Rene & Avril Lavigne
Bieber, Ne-Yo and Pitbull are performing on the second night.
Still a few more surprise performances aswell.
http://www.usmagazine.com/entertainm...#ixzz1hD1etf3r
X Factor USA >>>>> UK