A surprise gig for The Rolling Stones is now yielding a surprise release. Back in March, 1977, two concerts were announced to take place at the small, roughly 300-capacity Toronto club El Mocambo. Canadian rock band April Wine was confirmed as the headliner; the support act was an unknown band called The Cockroaches. Tickets were distributed via a radio contest on CHUM-FM. It wasn't until the contest winners were being transported to the club on a chartered bus that radio station officials informed them The Cockroaches - in actuality, Mick Jagger, Keith Richards, Bill Wyman, Ron Wood, Charlie Watts, and special guest Billy Preston - would be taking the stage that night as headliners. April Wine was relegated to opening status. Attendees still recall their surprise when Charlie Watts took the stage to adjust his kit before his bandmates entered.