How many movies have Nikolaus Harnoncourt and Peter Straka collaborated on?

They have worked on 3 movies together! Their first movie together was L'Incoronazione di Poppea (1979) while their highest rated movie together was Mozart: Mitridate Re Di Ponto (1986). They have not worked together since Mozart: Mitridate Re Di Ponto (1986). They are most known for their music films together.