How many movies have Ahti Sonninen and Risto Orko collaborated on?

They have worked on 4 movies together! Their first movie together was Koskenkylän laulu (1947) while their highest rated movie together was Härmästä poikia kymmenen (1950). They have not worked together since Härmästä poikia kymmenen (1950). They are most known for their drama films together.