Porgy and Bess is a 1959 American musical film directed by Otto Preminger. It is based on the 1935 opera of the same name by George Gershwin, DuBose Heyward, and Ira Gershwin, which is in turn based on Heyward's 1925 novel Porgy, as well as Heyward's subsequent 1927 non-musical stage adaptation, co-written with his wife Dorothy. The screenplay for the film, which turned the operatic recitatives into spoken dialogue, was very closely based on the opera and was written by N. Richard Nash.