president joe biden, elton george and other stars honored him. he s best known for singing i left my heart in san francisco with john calling him irreplaceable. bennett won 19 grammy awards and an emmy. reporter: a legend on stage, tony bennett s career spanned more than 70 years. he was opening up for pearl bailey when bob hope discovered him in 1949 in a new york city club. you know, it s been about 16 years since i discovered you singing in a gren niche village nightclub. how come this is your first appearance on my television it in show? i ve been waiting for you to make good. reporter: he had a strong of hits in the 50s, but his best was yet to come. he won in 1963 i left my heart in san francisco and performed