This heading is assigned to bluegrass music for two or more performers --headings for music of individual instruments followed by the qualifier "(Bluegrass)" and the subdivisions Methods (Bluegrass) and Studies and exercises (Bluegrass) under individual musical instruments and families of instruments
This heading is assigned to country music for two or more performers --headings for music of individual instruments followed by the qualifier "(Country)" and the subdivisions Methods (Country) and Studies and exercises (Country) under individual musical instruments and families of instruments