Leaked Single Shows Off A Whole New Side To Katy Perry

This has been a busy summer for Katy Perry: She appeared on the cover of Vogue, hung with Britney Spears, and kept the whole world guessing about the status of her relationship with John Mayer. Oh, and she recorded an album. Her third LP, Prism, is due out October 22, but fans are getting a sneak peek of the first single, "Roar," now that it's been leaked. And guys, it is good. The entire album was designed to be a departure from her earlier material, to show how the artist has matured. "I'm rea...