Henry John Deutschendorf Jr. (December 31, 1943 – October 12, 1997), known professionally as John Denver, was an American musician, singer-songwriter, record producer, activist, actor, and humanitarian, whose greatest commercial success was as a solo singer, starting in the 1970s. He was one of the most popular acoustic artists of the decade and one of its best-selling artists. By 1974, he was firmly established as America's best selling performer, and AllMusic has described Denver as "among the most beloved entertainers of his era".