A sense of play also infuses Vivarium Studio's L'Effet de Serge, a show of almost unendurable charm. Alone in his apartment, Serge (Gaëtan Vourc'h) devises seemingly low-tech effects with store-bought gadgets, such as "Rolling Effect on Music by Handel" or "Laser Effect on Music by John Cage." Each Sunday, he invites guests to his home, serves them a glass of wine, and performs the results. Vourc'h and creator Philippe Quesne pervade the production with a Gallic insouciance, interrupting moments of high seriousness with a stumble into a door or an ill-timed pizza delivery. As Serge toys with each new object, he communicates how readily the imagination can transform the everyday into the fantastic. It's a lesson most of us knew as children, when tipped-over furniture or misappropriated clothing could alter the world entirely. Triumphantly, L'Effet de Serge makes one feel like a kid again.