Grace Potter has a killer voice – she’s a small-town girl from upper Vermont (she has a locally manufactured chocolate bar named after her), but girlfriend can belt it like the big-leaguers. Her throaty, hardy vocals recall a little bit of Janis, a little bit of Aretha – especially when combined with the funky, brilliantly blues-infused sound of her band, the Nocturnals. (Potter also plays a mean electric guitar and keyboard). The quintet released their third effort last year, an eponymous album produced by Mark Batson (Alicia Keys, Beyoncé); it’s a polished, jazzy affair that’s been gaining the band legions of new fans based on the strength of the fiery singles “Tiny Light” and “Paris (Ooh La La).” Seattle’s definitely fallen for Potter – tonight’s show is already sold out. With Chamberlin. ERIN K. THOMPSON

Thu., Jan. 27, 8 p.m., 2011