How many movies have Heinz Zednik and Hugo von Hofmannsthal collaborated on?

They have worked on 3 movies together! Their first movie together was Der Rosenkavalier (1984) while their highest rated movie together was Der Rosenkavalier (1994). They have not worked together since Strauss: Ariadne Auf Naxos (2007). They are most known for their music films together.