First performed by Claramae Turner (1954).
Hit version by Tony Bennett (US #19/MOR #7 1962 |UK #25 1965).
From the wiki: “‘I Left My Heart in San Francisco’ was written in the fall of 1953 in Brooklyn, New York, by George Cory and Douglass Cross, two amateur writers nostalgic for San Francisco after moving to New York. The song was originally written for opera singer Claramae Turner, a personal friend of Cross, who often used it as an encore. However, she never got around to recording it. The song found its way to Tony Bennett through Ralph Sharon, Bennett’s longtime accompanist and friends with the composers. Sharon brought the music along when he and Bennett were on tour and on their way to San Francisco’s Fairmont Hotel.
“Prior to Bennett hearing it, though, the song was first pitched to Tennessee Ernie Ford, who Turner first suggested Cross take it to. Ford turned the song down (but, in a coincidental turn of events, later purchased a ranch in Lake County, California, north of San Francisco, owned by Cross’s family).