Pitchfork

It's probably kinda cheating when your mash-up puts together three songs that basically don't have tunes (or, in the case of Avril Lavigne's new "Girlfriend", merely an incidental one pastiched from Now That's What I Call Late-90s Pop-Punk). No pitch-matching required, right? Still, there's a reason the cheerleader-chant genre won't just get the hey-hey F-U-C-K out of our lives. And there's something bracing about the easy beats from Atlanta rapper Unk's "Walk it Out" meeting Avril's expensively chintzy guitar chords.

While Lavigne, at 22, is probably a little old to be playing a teenager in this tragic post-"The O.C." (post-"90210") world, Unk actually made a name for himself playing pep rallies and proms back in Georgia. When Toni Basil's 1982 hit "Mickey" meets the other two songs at the bridge, either everything makes sense, or we've watched Wayne's World way too many times. (P.S. Check out A-Trak's "Walk It Out" remix.)

Stream: > DJ Lobsterdust: Walkin' Out Yo Girlfriend [Unk vs. Avril Lavigne ft. Toni Basil]