Tony Bennett, who has died aged 96, made a high art out of being the very best kind of saloon-bar singer 

American singer whose artistry and power earned him hits in the 50s and 60s

 He was not only in the good-humoured optimism of his big, expansive sound, but also in an unquenchable appetite for sharing good songs.

Jerry Garcia  American musician tweets about Tony with a picture "They left their hearts in San Francisco. Fare thee well to a true gentleman "

American singer-songwriter Christina Aguilera pay tribute with him a picture on twitter " Saddened by the loss of a true music icon, Tony Bennett.."

American singer-songwriter John Mayer tweets ,The world lost a true legend today. Tony Bennett was a brilliant artist and a soulful, kind and loving human being

American singer-songwriter Mariah Carey also tweets ,Rest in Peace Tony Bennett. It was such an honor to work with one of the world's most beloved, respected and legendary singers of the past century. We will miss you ❤️

American singer Wynonna Judd said, One of THE greatest memories I have EVER experienced was getting to perform with Mr. Bennett. What a blessing he was to me.

American singer Reba McEntire said, He was a gentleman and a music icon and his voice will live on for years to come. Rest in peace, Tony.

American Singer Carrie Underwood pay tribute by tweets : He was a gentleman and a music icon and his voice will live on for years to come. Rest in peace, Tony.