Barely legal singer/actress/model Sky Ferreira's full-length debut isn't due until this summer, but the 18-year-old Cali hottie has a ton of buzz: Both she and her song "Sex Rules" have appeared in a Calvin Klein ad campaign, and there's already a tumblr devoted to her (called "Fucky Yeah Sky Ferreira," natch). This EP suggests the heat isn't just hot air. Her Auto-Tune-free voice has a natural, sexy swagger that suits the Eighties-throwback disco grooves Greg Kurstin and Bloodshy & Avant worked up for As If! In an incredibly fun 17 minutes, Ferreira espouses the awesomeness of sex ("Sex Rules"), bitches about Internet trolls ("Haters Anonymous") and chides a crybaby ex ("99 Tears") over synths that sound downright vintage next to the laser beams on the new Britney Spears album.

Listen to "Sex Rules":

Gallery: Getting Naked on the Cover of Rolling Stone

“Oh Sherrie”

Steve Perry's girlfriend Sherrie Swafford was actually in the studio when Perry began writing this song--his lone Top Ten hit as a solo act--with two co-writers. The trio began at midnight one night with just "Oh, Sherrie!" and "hold on, hold on." Three hours later, they had a complete song. Swafford, however, had to wait until the next day to hear it. "Sherrie actually got tired and went to bed," Perry said. She also appeared in the video, but their relationship did not hold on for long.