STAGE TUBE: Justin Bieber Sings Impromptu 'Baby' at Stratford Shakespeare Festival

According to the Toronto Star, Justin Bieber showed up to serenade crowds during the intermission of Stratford Shakespeare Festival's You're a Good Man, Charlie Brown at the Avon Theatre today, June 17. According to the festival's publicity director Ann Swerdfager, this was an impromptu appearance. Surrounded by fans, the pop star sang "Baby" while strumming his guitar, then left at the end of intermission.

Watch the video of him singing below!