History and criticism 58 Music 58 History 20 Operas 20 Popular music 14 Instruction and study 12 Philosophy and aesthetics 12 más ... Criticism and interpretation 11 Social aspects 11 Opera 10 Psychological aspects 8 Ballets 7 Composers 6 Folk music 6 Music therapy 5 Political aspects 5 Jazz 4 Music theory 4 Music trade 4 Performance 4 Women composers 4 Analysis, appreciation 3 Brass band music 3 Christianity 3 Musicology 3 Philosophy 3 Religious aspects 3 Rock music 3 African Americans 2 Brass bands 2 menos ...