How many movies have Gerhard Hahn and Karsten Sahling collaborated on?

They have worked on 5 movies together! Their first movie together was Werner - Volles Rooäää!!! (1999) and was their highest rated movie together. They have not worked together since The Fairy Tales of the Brothers Grimm: The Six Swans / The Devil's Three Golden Hairs (2006). They are most known for their animation films together.