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Clinton may have been acquitted, but he’s not off the hook just yet. Lee “Scratch” Perry warns, “I am coming to tour America…to prove to the president of America that he is not the right president, that I am the right president.” In reggae, like pop, the producer is often paramount, and Perry is a certified legend, besides sometimes seeming certifiable. Renowned for his still-mystifying techniques, perfected at his now-defunct (it burned to the ground in the late ’70s) Black Ark recording studio, Perry has worked with many of reggae’s other legends, including Bob Marley, Peter Tosh, and Bunny Wailer, all of whom he paired with the Barrett brothers of his own band, the Upsetters, resulting in the formation of Bob Marley and the Wailers. Perry’s current tour is notable for the presence of another acclaimed producer, England’s Mad Professor. The Mad One handled production chores on Perry’s rather ordinary-sounding latest, Dub Fire, released by local label RAS Records and distinguished mainly by septuagenarian Perry’s world-weary voice and wild stream-of-consciousness lyrics. Though Dub Fire fails to scale the heights of either Perry’s ’70s sonic revelations or Mad Professor’s own career highlights—such as 1995’s No Protection, a visionary version of Massive Attack’s Protection that finally delivered on all the false promises of countless nonreggae “dub” remixes—sparks may well fly between the two dubmasters on stage. At 10 p.m. Sunday, Feb. 28, at Crossroads, 4103 Baltimore Ave., Bladensburg. $25. (301) 927-1056. (Daniel Searing)