How many movies have Mark Walker and Ralph Towner acted in together?

They have worked on 4 movies together! Their first movie together was Oregon - 27 Leverkusener Jazztage (2006) while their highest rated movie together was Oregon et le Frankfurt Radio Bigband (2013). They have not worked together since Oregon - Leverkusener Jazztage 2015 (2015). They are most known for their music films together.