FILE - This Dec. 1, 2012 file photo shows Taylor Swift performing underneath a video monitor during the KIIS FM's Jingle Ball at Nokia Theatre LA Live in Los Angeles. Swift is one of many artists performing at the Grammy Nominations concert airing Wednesday, Dec. 5, at 10 p.m. EST on CBS. (Photo by Chris Pizzello/Invision/AP, file)

FILE - In this Dec. 1, 2012 file photo, Ne-Yo performs at KIIS FM's Jingle Ball at Nokia Theatre LA Live in Los Angeles. “MTV's Club NYE 2013” will feature performances from Ke$ha, Ne-Yo, Sean Kingston, Rita Ora and others. (Photo by Chris Pizzello/Invision/AP, File)

FILE - In this Dec. 1, 2012 file photo, Zach Filkins, left, and Ryan Tedder of the band OneRepublic perform at KIIS FM's Jingle Ball at Nokia Theatre LA Live in Los Angeles. (Photo by Chris Pizzello/Invision/AP)