How many movies have Aarne Laine and Arvo Murtokallio collaborated on?

They have worked on 13 movies together! Their first movie together was Kirkastuva sävel (1946) while their highest rated movie together was Scandal in the Girls' School (1960). They have not worked together since Naiset, jotka minulle annoit (1962). They are most known for their drama films together.