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

“Everyday People”

"Everyday People" managed to trailblaze in two different ways -- it was one of the first pop hits to deal with the subject of racial harmony, and it utilized Larry Graham's "slap" technique on the bass guitar, which would soon be copied by countless other bassists. Graham once said about his pulsating style, "I'd never done that before … that's where the freedom of creativity came in for the band, that we'd be allowed to do that." In 1978, the song's line "Different strokes for different folks" would be borrowed for the title of the hit television show Diff'rent Strokes.