Harry Warren was one of America's most prolific and successful film songwriters of the 20th century. Born Salvatore Antonio Guaragna, he won three Academy Awards for Best Original Song for his work in musical films. His compositions, including 'Lullaby of Broadway,' 'You'll Never Know,' and 'On the Atchison, Topeka and the Santa Fe,' became enduring standards. Despite writing over 800 songs and being instrumental to the Hollywood musical genre, he remained relatively unknown to the general public.