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STORY: Katy Perry released her latest album "Prism" on Tuesday (October 23) with a performance at the opening of the iHeartRadio Theater in Burbank, California. The singer performed her latest single, "Unconditionally," before a packed crowd. The album represents a departure from Perry's previous candy-colored pop, with many songs being influenced by her divorce from Russell Brand and her on-again-off-again relationship with John Mayer.
