How many movies have E. T. A. Hoffmann and Pyotr Ilyich Tchaikovsky collaborated on?

They have worked on 7 movies together! Their first movie together was Nutcracker Fantasy (1979) while their highest rated movie together was Salzburg Marionette Theatre: The Nutcracker (2009). They have not worked together since Lo Schiaccianoci al Teatro alla Scala (2022).