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

They have worked on 5 movies together! Their first movie together was Porgy and Bess (1959) while their highest rated movie together was The Gershwins' Porgy and Bess (2009). They have not worked together since The Metropolitan Opera: Porgy and Bess (2020). They are most known for their music films together.