How many movies have Jaroslav Kvapil and Štěpán Kopecký collaborated on?

They have worked on 3 movies together! Their first movie together was Skřivánčí píseň (1933) while their highest rated movie together was Hrdina jedné noci (1935). They have not worked together since Hrdina jedné noci (1935). They are most known for their comedy films together.