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Britain’s self-dubbed Asian Underground has gotten a lot of press for its barrier-bending mixture of Old World sounds (tablas and sitars) with New World orders (drum ‘n’ bass and techno). At one end of the spectrum are the limpid sonics of Talvin Singh; at the other, the drill ‘n’ bass sounds of Asian Dub Foundation. The band’s strident U.S. debut, Rafi’s Revenge, is a politically charged shout for the “Digital Underclass,” as one track is titled. Heavy dubs like “Buzzin,” “Black White,” and “Hypocrite” butt heads against “Naxalite,” “Operation Eagle Lie,” and “Free Satpal Ram,” which sound like aggressive dance-hall remixes of the Clash by dub doctor Mad Professor. Asian Dub Foundation’s rapper Deeder is a shouter, a cajoler, and a fierce frontman—which should be readily apparent when the band performs with Japan’s dubadelic Audio Active at 8:30 p.m. at the Black Cat, 1831 14th St. NW. (202) 667-7960. $9. (Christopher Porter)