“Iron Guts Kelly glides onstage and plays a solid 30-minute set of mean-person music. The singer paces in a circle or up to some still person in the crowd, shouting like your dad shouts, looking the whole time like he’s going to beat and/or eat someone, while the two guitar-playing dudes play notes together and make an effort to stand in the same posture. A mysterious guy crouches behind the guitar amp, doing nothing other than watching the band. He could be a stagehand, or a henchman, or a superfan.”