JOAN OSBORNE While booty-shaking divas clutter the airwaves, singers like Joan Osborne, with her blues-soaked voice, are out to save the world. She hasn't landed in hitsville since the '90s, but that doesn't matter, as her brash originals stand firm. And she can toss around a cover song with ease, which is nicely showcased on Bring it On Home, her recent recording of covers. The record marks a return to her roots - blues, soul and R&B - where she belts out fiery versions of old classics that can teach a trick, or dozen, to divas more interested in changing wardrobes than making ballsy music. With Lera Lynn. $25. Visulite Theatre.