The Hummel Brothers, a sibling folk trio, can intuit each other’s inner feelings the way only family members can. This leads to some gorgeous harmonies. But God forbid one of them forgets some lyrics. Because fighting is another thing families are good at.

When Joe Hummel missed the bridge “Heart of Kentucky” at a Bullfinch happy hour set Wednesday, brothers Bill and Jim both erupted. Four shattered pint glasses later, the set was abruptly over, and the brothers still had to grab their gear, drive home together… and prepare for tonight’s gig at the Fool You coffeehouse.

The BeSticks and Brass Kettle Professionals, college professor rock, at the Bullfinch. Yes, It’s “Soak Your Term Paper Night” again. … The Cohassets and All About Swing at Hamilton’s. More old people dancing. … An Evening With Yield on Green at D’Ollaire’s.