How many movies have Barbara Kowa and Ralf Leutheuser collaborated on?
They have worked on 1 movie together! Their first movie together was Blues (2009) and was their highest rated movie together. They have not worked together since Blues (2009).
They have worked on 1 movie together! Their first movie together was Blues (2009) and was their highest rated movie together. They have not worked together since Blues (2009).
