FILE - In this Mon., Dec. 3, 2012 file photo, Ke$ha performs 

FILE - In this Mon., Dec. 3, 2012 file photo, Ke$ha performs during the second night of KIIS FM's Jingle Ball at Nokia Theatre LA Live in Los Angeles.  “MTV's Club NYE 2013” will feature performances from Ke$ha, Ne-Yo, Sean Kingston, Rita Ora and others.  (Photo by Chris Pizzello/Invision/AP, File)
Associated Press
FILE - In this Mon., Dec. 3, 2012 file photo, Ke$ha performs during the second night of KIIS FM's Jingle Ball at Nokia Theatre LA Live in Los Angeles. “MTV's Club NYE 2013” will feature performances from Ke$ha, Ne-Yo, Sean Kingston, Rita Ora and others. (Photo by Chris Pizzello/Invision/AP, File)
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