“Katy Perry's 2010 album, Teenage Dream, was such a massive blockbuster that we've had to wait three years for the follow-up where she reveals the multifaceted artist behind the fun pop sheen. And Prism is as prismatic as all get-out: There's the Blakean feline of "Roar," the trap-rap interlocutor of "Dark Horse" (featuring Juicy J of Three 6 Mafia), the jet-set gal pal of "International Smile." On”
