How many movies have Christian Gasser and Martin Sierek collaborated on?

They have worked on 1 movie together! Their first movie together was Leben und Leiden des unglückseligen Kapellmeisters Herr von KA (1989) and was their highest rated movie together. They have not worked together since Leben und Leiden des unglückseligen Kapellmeisters Herr von KA (1989).