Gary Clark Jr.’s first live album—he simply called it Live—was released three years ago and was an absolute barn burner. So why not do it again? This second volume doesn’t really bring anything new to the concept—what you hear is what they played, sans overdubs (although, for whatever reason, the credits don’t mention where or when the performances took place)—but it does succeed in reinforcing the notion that these guys are best heard in action, in front of an audience. While Clark’s studio releases have all been more than worthwhile, the singer/guitarist and his band—King Zapata (guitars), Johnny Bradley (bass/backing vocals) and Johnny Radelat (drums/backing vocals)—didn’t hold anything back when they perform live. There’s a whole extra level or two of excitement and grit going on here. That’s most evident on the tunes recycled from Clark’s last studio set, 2015’s The Story of Sonny Boy Slim. On that album, “Grinder,” a Clark original, is given a near-metallic weightiness that likens it to an early Zeppelin track. Live, “Grinder” loses some of its fuzz and grunge, opting for a more swinging, soulful approach that better suits it. On the other hand, “Shake,” which also originated on Sonny Boy, maintains its primal boogie-woogie beat in this live version (featuring a vocal turn from Leon Bridges as well as his saxophonist Jeff Dazey) but grows a scuzzy drone that’s downright menacing. Throughout, of course, there’s that mean-ass playing that put Gary Clark Jr. on the map in the first place—listen to him on Elmore James’ “My Baby’s Gone,” all by his lonesome, and you can rest assured that blues guitar is alive and well.