History and criticism 132 Music 127 History 58 Social aspects 32 Popular music 30 Instruction and study 29 Criticism and interpretation 24 Folk music 22 Philosophy and aesthetics 22 Rock music 18 Rock musicians 17 Composers 15 Flamenco music 10 Opera 9 Political aspects 8 Motion picture music 7 Church music 5 Folk songs, Spanish 5 Motion pictures and music 5 Music teachers 5 Music theory 5 Musicians 5 Singers 5 Social life and customs 5 Women musicians 5 Blacks 4 Dance music 4 Jazz 4 Music and literature 4 Music therapy 4