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In a debate about who belongs on a modern bluegrass Mount Rushmore, Peter Rowan’s career would merit a strong argument for inclusion alongside Del McCoury, Bill Monroe, Earl Scruggs, and Doc Watson, even if he would narrowly miss the cut. Over the course of a five-decade career, Rowan has collaborated with just about every bluegrass artist of note, but he was also influenced by the folk, rock, and blues of the ’60s which led to collaborations with, among others, Jerry Garcia and John Kahn of The Grateful Dead. Coupled with his Buddhist faith, this makes him bluegrass’ lovable hippie uncle. Never has that designation been more apparent than on his latest release, Dharma Blues. Rowan colors his country and bluegrass with a shade of psychedelic tambura, mantric rhythms, and flute. “Ain’t no God up in heaven. Ain’t no devil down below,” he sings on the title track, another clear signal that he’s moving beyond the traditional trappings of the genre. At 73, he’s separated himself from his contemporaries and found a sound that’s his own. In a genre so tied to its roots, it’s quite the accomplishment to get to the point where folks might say, “Peter Rowan? Oh yeah, he sounds like Peter Rowan.” Peter Rowan performs with Grand Ole’ Ditch at 8 p.m. at Gypsy Sally’s, 3401 K St. NW. $23–$25. (202) 333-7700. gypsysallys.com.