There’s nothing like a crowd to drive ambitious souls in new directions. So while the Brooklyn quintet Punch Brothers is a string band with a long collective pedigree in roots music, they’re also notable for their skill

Thursday, April 30, Guster @ Marquette University, 7:30 p.m. Following the jam-band business model even though they don’t much care for jamming, Guster has gradually built their following by encouraging tape trading and touring colleges like the one that spawned them 18 years ago, Tufts University. They've become...