Between songs, Jesso seemed nervous and unsure, rambling and repeatedly cussing out his piano. When he was singing, though, that wasn’t a problem. His voice was as warm and crystalline as it is on Goon, his debut album, and now he has a live band that can give his songs the arrangements they need. I believe this was Jesso’s first time playing with a big full band, and it sure helped to have a couple of horn players and a violin up there. Best part: During “Can’t Stop Thinking About You,” Jesso asked for “sexy sax,” and his saxophonist responded with a few bars of straight-up smooth-jazz slickness. It sounded ridiculous and also awesome, and everyone onstage seemed to know it.