`` Whitman joined the Grand Ole Opry , and then went to Britain in 1956 as the first country singer to play the London Palladium . Country music singer Slim Whitman died at 90 Wednesday . The cause was heart failure . The country singer found fame in Europe as well as in the U.S .
Country music singer Slim Whitman died at 90 Wednesday . The cause was heart failure . The country singer found fame in Europe as well as in the U.S .