How many movies have Jules Barbier and Plácido Domingo collaborated on?

They have worked on 3 movies together! Their first movie together was Les Contes d'Hoffmann (1981) while their highest rated movie together was The Metropolitan Opera HD Live Gounod's Romeo et Juliette (2007). They have not worked together since Salzburg Marionette Theatre: The Tales of Hoffmann (2019). They are most known for their drama films together.