Summertime (George Gershwin song) was composed for the opera Porgy and Bess.
Porgy and Bess is an English-language opera composed in 1934 by George Gershwin , with a libretto written by DuBose Heyward and Ira Gershwin . `` Summertime '' is an aria composed in 1934 by George Gershwin for the 1935 opera Porgy and Bess .