Complex sentence: As a result of Roland's growing interest in bluegrass music, the group soon switched to an exclusively bluegrass repertoire and, with the addition of banjoist Billy Ray Latham and Dobro player LeRoy Mack in 1957, the band renamed themselves the Country Boys.
Split into simpler sentences: As a result of Roland's growing interest in bluegrass music, the group soon switched to an exclusively bluegrass repertoire. With the addition of banjoist Billy Ray Latham and Dobro player LeRoy Mack in 1957, the band renamed themselves the Country Boys.