How many movies have Gusti Huber and J.A. Hübler-Kahla collaborated on?

They have worked on 3 movies together! Their first movie together was Tanzmusik (1935) while their highest rated movie together was Buchhalter Schnabel (1935). They have not worked together since Ein Walzer um den Stephansturm (1935). They are most known for their comedy films together.