Steve Thomas could serve as a model for young musicians who want successful careers that don’t involve standing at center stage. He’s played fiddle for Del McCoury, Jim & Jesse, Brooks & Dunn, the Osborne Brothers and Lee Ann Womack, just to name a few, and he’s been admired in and around Nashville for years. So it’s no surprise that after his Gallatin home caught fire last New Year’s Eve, the response would include a star-studded benefit of this magnitude. There’s plenty of great music on tap, but there’s a bonus too: the opportunity to get a taste of just what the words “bluegrass community” really mean. And when Thomas and his current musical partner Mark Newton take the stage, it ought to make for one powerful moment.