How many movies have Birgitta Svendén and Harry Kupfer collaborated on?

They have worked on 4 movies together! Their first movie together was The Ring Cycle: Gotterdammerung (1991) while their highest rated movie together was The Ring Cycle: Die Walkure (1992). They have not worked together since The Ring Cycle: Siegfried (1992). They are most known for their music films together.