Glen Campbell, a guitar prodigy and ballad singer who dominated the polished, string-swelling countrypolitan sound of the late 1960s and 1970s and cultivated a clean-cut image at odds with his once-stormy personal life, died Aug. 8 in Nashville. He was 81.

His publicist confirmed the death to the Associated Press. Mr. Campbell announced that he had Alzheimer’s disease in 2011 and performed what he called the Glen Campbell Goodbye Tour shortly thereafter. In 2015, he won his sixth and final Grammy Award, honored for best country song “I’m Not Gonna Miss You,” which he co-wrote for a documentary about his life and deteriorating health.

In a career that spanned six decades, Mr. Campbell made dozens of albums, sold more than 40 million records and was inducted into the Country Musicsuperstar entertainer Glen Campbell (1936-2017) View Photos Glen Campbell, the grinning, high-pitched entertainer whose dozens of hit singles included “Rhinestone Cowboy” and “Wichita Lineman” and whose appeal spanned country, pop, television and movies, died on Aug. 8, 2017, his family said. He was 81. Caption Glen Campbell, the grinning, high-pitched entertainer whose dozens of hit singles included “Rhinestone Cowboy” and “Wichita Lineman” and whose appeal spanned country, pop, television and movies, died on Aug. 8, 2017, his family said. He was 81. 1987 Country star Glen Campbell plays the guitar during a performance. Campbell, a guitar prodigy and ballad singer who dominated the polished, string-swelling countrypolitan sound of the late 1960s and 1970s and cultivated a clean-cut image at odds with his once-stormy personal life, died at 81