How many movies have Sergei Prokofiev and Vasili Goryunov collaborated on?

They have worked on 2 movies together! Their first movie together was Ivan the Terrible, Part I (1944) while their highest rated movie together was Ivan the Terrible, Part II: The Boyars' Plot (1958). They have not worked together since Ivan the Terrible, Part II: The Boyars' Plot (1958).