Harry Warren (December 24; 1893 September 22; 1981) (born Salvatore Antonio Guaragna) Brooklyn; New York was an Italian-American composer and lyricist.Warren is particularly remembered for writing scores for the films of Busby Berkeley. The musical 42nd Street showcases his spectacularly popular songs from these films. Warren won the Oscar for Best Song with three collaborating lyricists: -Lullaby of Broadway- with Al Dubin in 1935; -You-ll Never Know- with Mack Gordon in 1943; and -On the Atchison; Topeka and the Santa Fe- with Johnny Mercer in 1946. "You'll Never Know" is a popular song. The music was written by Harry Warren and the lyrics by Mack Gordon, based on a poem written by a young Oklahoma war bride named Dorothy Fern Norris. The lyrics can be found at .
The song was introduced in the 1943 movie Hello, Frisco, Hello where it is sung by Alice Faye. It was also performed by Faye in the 1944 film Four Jills in a Jeep. It was recorded in 1943 by, among others, Frank Sinatra and Dick Haymes. Haymes’ version was a number one hit for four weeks on the R&B charts that year .
Sinatra recorded his version at his first recording session at.