How many movies have DuBose Heyward and George Gershwin collaborated on?

They have worked on 4 movies together! Their first movie together was Porgy and Bess (1959) while their highest rated movie together was The Metropolitan Opera: The Gershwins’ Porgy and Bess (2020). They have not worked together since The Metropolitan Opera: The Gershwins’ Porgy and Bess (2020). They are most known for their music films together.