PICS: ET's New Music Tuesday

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Katy Perry's first single Roar, off her new album Prism, is out now. Roar is the first step in Perry's evolution as an artist into a more mature, raw and real version of her California Gurls self. Perry just revealed that she will be performing on the upcoming MTV Video Music Awards Aug. 25. Prism will be available Oct. 22. Watch the Roar lyric video here