he Théâtre Des Champs-Elysées in Paris glows in the dark, casting light on Avenue Montaigne, an elegant street whose sleek, upscale shops bear such eye-catching names as Dior, Prada, Valentino, Louis Vuitton and Harry Winston. The five-storey Canadian embassy building is close by, and the iconic Eiffel Tower glimmers enticingly in the distance. On this chilly night in the City of Lights, Parisians line up to watch a live performance of La Flute Enchantée (The Magic Flute), Wolfgang Amadeus Mozart’s passionate, playful opera. The thirtysomething performers, dressed in contemporary clothes, put on a rousing show. There is thunderous applause as...