Katy Perry's New Single, 'Roar', Leaked Early. When Will It Dethrone 'Blurred Lines'?

Perry arriving at Z100 for the world premiere of her new single, Roar, on Monday in New York Photograph by Scott Gries/Invision for Capitol Records via AP Images

When Katy Perry’s new song, Roar, showed up online over the weekend, two days before its official release date, EMI/Capitol did something interesting: In an acquiescing shrug of the shoulders, the record label decided against containing the leak and instead sent the song to radio stations and iTunes two days early.

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