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As a singer, Gov’t Mule’s Warren Haynes isn’t as achy or reserved as Gregg Allman, and he doesn’t even try to duplicate brother Duane’s touch on guitar. But aping the Allman Brothers Band is not the primary objective of this spinoff trio. Haynes is a beefy, powerful man who plays and howls the way he looks, emphasizing the muscular jams that are central to the sound of so many Southern-rock bands. As a staple of the bar circuit, it’s no surprise that extended guitar workouts are Mule’s forte. But occasionally, Haynes and the boys reach further, as in “Trane,” a metallic homage to John Coltrane and a decent example of what longtime Allmans fans know can happen when the boogie is taken into the unknown. With Sweet Vine at 8 p.m. at the Bayou, 3135 K St. NW. $12. (202) 333-2897. (Brett Anderson)