The bluegrass world has never recovered from the Osborne Brothers band that walked on-stage in 1956'; wrote one commentator. Sonny and Bobby Osborne changed the rules. They came out of a rich tradition and had played with many bluegrass giants, but when they struck out on their own they featured their new concepts of vocal harmony and fuller backings. Their first hit, Ruby Are You Mad, was followed by such classics as Once More, Rocky Top, and The Kind Of Woman I Got. This set includes all 60 recordings they made for MGM between 1956 and 1963, as well as their earliest recordings for Decca from 1963 to 1968. The oustanding backing musicians include Red Allen, Benny Birchfield,and Buddy Spicher.