What happens when two percussion virtuosos end up working with a team of bungling stagehands and technicians? That’s what you’ll find out in Theatre À Tempo’s most recent creation. The two somewhat pompous concert artists take the stage, confident in their ability to impress their faithful audience. The concerto begins seriously enough, but the well-intentioned stage crew turns out to be highly unpredictable. That’s when the concerto takes a decidedly unconventional twist, forcing the musicians to up the creative ante as they devise original ways to keep the performance on track, showcasing their percussive talents on an array of unusual instruments in the process.