Courtesy Grand Ole Opry. From left to right: 1960s: An outfit from one of Parton's many performances at the Opry — then located at the Ryman Auditorium —that decade.

The Grand Ole Opry in Nashville is marking its 100th anniversary by celebrating the 100 all-time greatest country songs and the chance to vote for the No. 1 song released in the Opry's history.

For much of its history, The Grand Ole Opry was broadcast from Nashville's Ryman Auditorium, known as "The Mother Church of Country Music," but since 1974, The Grand Ole Opry House has been its ...