How many movies have Gwynne Howell and Plácido Domingo acted in together?

They have worked on 3 movies together! Their first movie together was Verdi Un Ballo in Maschera (1975) while their highest rated movie together was Les Contes d'Hoffmann (1981). They have not worked together since Puccini's La Fanciulla del West (1983). They are most known for their music films together.