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Singer Andy Williams has died aged 84.
His publicist, Paul Shefrin, said the star died on Tuesday night at his US home following a year-long battle with bladder cancer.
Williams said in November 2011 that he was diagnosed with cancer but planned to continue performing.
He began singing with his brothers as a child, and his easy style and mellow voice led US President Ronald Reagan to call him "a national treasure".
Although Williams' version of Moon River made him world famous, it was among his many hits, including Butterfly and Can't Get Used To Losing You.
He said of Moon River: "When I hear anybody else sing it, it's all I can to do stop myself from shouting at the television screen, 'No! That's my song!'"
The Andy Williams Show, which lasted in various formats on television through the 1960s and into 1971, won three Emmys and featured Williams alternately performing his stable of hits and bantering casually with his guest stars.
In 1992, Williams decided to settle in Branson, Missouri, the self-proclaimed "live entertainment capital of the country," with its dozens of theatres featuring live music, comedy and magic acts. "The fact is most of my friends in LA still think I'm nuts for coming here," he said in 1998.
Retirement was not on his schedule. As he said in 2001: "I'll keep going until I get to the point where I can't get out on stage."
