On Green Dolphin Street is a 1947 jazz standard composed by Bronisław Kaper with lyrics by Ned Washington for the film Green Dolphin Street, which starred Lana Turner and Van Heflin and was based on Elizabeth Goudge's 1944 novel. The first commercial recording was by the Jimmy Dorsey Orchestra in 1947. The tune blends pop and jazz and is in E-flat major, renowned for its eight bars of floating pedal point followed by eight bars of rapid harmonic movement. Ahmad Jamal popularized it in 1956 on Count 'Em 88, a performance that foreshadowed Miles Davis's 1958 sextet version with Coltrane and Evans, helping to cement the piece as a jazz standard with more than 700 recorded versions. Vocal versions exist but some critics find the lyrics shallow; Mark Murphy's 1961 vocal is often praised.
