The idea of building a pop record out of stolen pieces of other pop records dates back as far as novelty singles like Chubby Checker's "The Class" and Dickie Goodman's "Mr. Jaws," and lately the art of mash-up has gotten so refined that DJs can craft songs that bear almost no resemblance to the songs they're sampling. But Girl Talk's Night Ripper is a throwback party album, in the tradition of Double Dee & Steinski's black-market "Lesson" singles. For 12 tracks and 40 minutes, Girl Talk—a.k.a. Pittsburgh DJ Greg Gillis—piles up instantly recognizable hooks from the likes of James Taylor, Smashing Pumpkins, Kanye West, MIA, Eminem, Billy Squier, The Waitresses, and more than 150 others. The disc is structured as a continuous mix, and Girl Talk rarely repeats the samples, so no one song really exists as a discrete entity. (Though some elements are "rhymed": for example, a snippet of a rap about bouncing breasts plays over the synth-line from The Pointer Sisters' "Jump.") It isn't exactly high art—it's more like a neat parlor trick—but Night Ripper is one of the most purely fun albums to come along since The Go! Team's debut. Pick it up quick, before it gets sued out of existence.