How many movies have E. T. A. Hoffmann and Lev Ivanov collaborated on?

They have worked on 4 movies together! Their first movie together was The Nutcracker (1964) while their highest rated movie together was Coppélia (The Royal Ballet) (2000). They have not worked together since The Royal Ballet: The Nutcracker (2022/2023) (2022). They are most known for their fantasy films together.