How many movies have Christa Ludwig and Walter Berry acted in together?

They have worked on 6 movies together! Their first movie together was Fidelio (1963) while their highest rated movie together was Beethoven · Missa Solemnis - Herbert von Karajan (2020). They have not worked together since Beethoven · Missa Solemnis - Herbert von Karajan (2020). They are most known for their music films together.