The Everly Brothers are an American country rock duo, known for their close harmonies and steel-string guitar playing. Their first single on the Cadence record label led to their first real success, and sold over a million records. They toured extensively with Buddy Holly during 1957 and 1958. They continued to have huge success up until they enlisted with the Army, which took them out of the spotlight, and led to a dramatic decline in popularity. The pair also had huge problems in their personal lives, with Don battling drug addiction. The Everly Brothers split in 1973, and this created a huge rift between them, and they didn't speak for ten years. Reunited in 1983, the duo have been playing round the world ever since.