Step Brothers actor John C. Reilly recently dropped in for an unexpected late-night performance at a dive bar in the Boston area. Local musician Jimmy Trapella recounted that he and his band, Bosstown Heavy, were performing at the bar on Thursday. Reilly, who was at the bar with a friend, joined the group to sing a few songs, including “54-46 (That's My Number)” by Toots and the Maytals. As an annual attendee of the Newport Folk Festival, Reilly regularly connects with musicians on a song during their sets. During this year's Newport Folk Festival, July 24-26, the Talladega Nights star was invited to come on stage by several artists, including Nathaniel Rateliff and Dawes.