EVENT A good mashup is musical proof that sometimes the whole is greater than the sum of its parts. ("ABC"? "Paradise City"? Both good songs. "ABC City?" Even better.) And when it comes to the art of mixing parts of two or more songs to make one revelatory new one, Bootie SF's Adrian and Mysterious D are expert mathematicians. The duo has been solving mashup equations for the masses for six years, and this weekend they're celebrating their international success with two nights of madness. Friday's theme is School Night, featuring classic mashups, Blow Up DJs upstairs, special performances by Renttecca and Suppositori Spelling, and plenty of naughty school-girl and -boy go-gos. Saturday's Pirate Night features last year's best mashups, DJs Jells Mayhem and Earworm, and performances by Anna Conda and Cookie Dough. And both nights will see A + D on the decks, mashup band Smash-Up Derby on live instruments, and gold-clad Bootie L.A. dance crew Random Acts of Irreverent Dance (R.A.I.D.) on stage. What do you get when you take SF's favorite dance party and double it? A damn good time.
BOOTIE SIX-YEAR ANNIVERSARY WEEKENDER Fri/7Sat/8, 9pm. $10$15. DNA Lounge, 375 11th St., SF. www.bootiesf.com>.