How many movies have Modest Tchaikovsky and Pyotr Ilyich Tchaikovsky collaborated on?

They have worked on 5 movies together! Their first movie together was Pique Dame (1992) while their highest rated movie together was Tchaikovsky: Iolanta / Bartók: Bluebeard's Castle (2015). They have not worked together since The ROH Live: The Queen of Spades (2019). They are most known for their music films together.