Country music legend Glen Campbell dies at 81

Glen Campbell. (MGN/file)

NASHVILLE, Tenn (AP) Glen Campbell, the grinning, high-pitched entertainer who had such hits as "Rhinestone Cowboy" and spanned country, pop, television and movies, has died. He was 81.

Campbell's publicist Sandy Brokaw says the singer died Tuesday morning in Nashville. No cause was immediately given. Campbell announced in June 2011 that he had been diagnosed with Alzheimer's disease and that it was in its early stages at that time.

Campbell was a sought-after session musician before his solo career took off. He played guitar on songs like Frank Sinatra's "Strangers in the Night", The Monkees' "I'm A Believer" and for many recordings of the Beach Boys and filled in for Brian Wilson when he took an extended break from performing.

Campbell was one of the biggest stars of the late 1960s and 1970s. He sold more than 45 million records, had 12 gold albums and 75 chart hits. He co-starred with John Wayne in the 1969 movie "True Grit" and had a weekly audience of some 50 million people for the "Glen Campbell Goodtime Hour" on CBS from 1969 to 1972.