FILE - In this April 27, 2011 file photo, sonwriters Max Martin, 

FILE - In this April 27, 2011 file photo, sonwriters Max Martin, from left, and Lukasz "Dr. Luke" Gottwalk, pose with singer Ke$ha after receiving their ASCAP Songwriters of the Year awards at the 28th Annual ASCAP Pop Music Awards in Los Angeles. Dr. Luke and Max Martin have written and produced dance-based hits from a ton of A-List singers, from Katy Perry to Ke$ha to Britney Spears. (AP Photo/Chris Pizzello, file)
Associated Press
FILE - In this April 27, 2011 file photo, sonwriters Max Martin, from left, and Lukasz "Dr. Luke" Gottwalk, pose with singer Ke$ha after receiving their ASCAP Songwriters of the Year awards at the 28th Annual ASCAP Pop Music Awards in Los Angeles. Dr. Luke and Max Martin have written and produced dance-based hits from a ton of A-List singers, from Katy Perry to Ke$ha to Britney Spears. (AP Photo/Chris Pizzello, file)
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