Porgy and Bess is a classic American opera composed by George Gershwin. It tells the story of Porgy, a disabled African-American beggar living in the slums of Charleston, South Carolina, and his love for the beautiful Bess.
From Wikipedia
Porgy and Bess is an English-language opera by American composer George Gershwin, with a libretto written by author DuBose Heyward and lyricist Ira Gershwin. It was adapted from Dorothy Heyward and DuBose Heyward's play Porgy, itself an adaptation of DuBose Heyward's 1925 novel Porgy.