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English DJ and producer Grooverider’s CV reads like a history of the contemporary London dance scene. From serving as a soul, hiphop, and what-have-you club selecter, to DJing on pirate radio (until he found out his record collection could be seized) in the heady early daze of acid house, to wet-nursing the protean development of drum ‘n’ bass, he’s done it all except release an album of his own tracks. Always ahead of the curve the name of the game in a club culture driven by exclusively commissioned limited-pressing dub plates he’s ahead of his own now, appearing in the U.S. more than a month before the stateside release of his debut long-player Mysteries of Funk. Tonight, expect the Godfather of Drum ‘n’ Bass to mix some of the looser, jazzier sounds of his forthcoming effort into a set of the hard ‘n’ dark tech step style he helped pioneer. With Franfurt’s Sven Vath and a coterie of other top turntable talent at 10 p.m. at the Ballroom, 1015 Half St. SE. $25. (202) 828-1984. (Daniel Searing)