This song comes from the Gershwins' opera Porgy and Bess (1935) where it is sung by the main character Porgy and his beloved Bess.
The song has been covered a number of times by many artists (Porgy and Bess (Ella Fitzgerald and Louis Armstrong album), 1958).
In 1959, Harry Belafonte recorded a duet with Lena Horne on their album Porgy and Bess.
In 1954 Harry James released a version on his album Trumpet After Midnight (Columbia CL-553).
Neil Sedaka sang a cover of this song for his 1961 album Circulate.