Instruction & Study 40 MUSIC 40 Piano-Vocal-Guitar Printed Music 40 Voice 40 History and criticism 20 Histoire et critique 19 SOCIAL SCIENCE 7 Chant 6 Étude et enseignement 6 General 6 Instruction and study 6 Liederen 6 Singing 6 BIOGRAPHY & AUTOBIOGRAPHY 5 Composers & Musicians 5 African Americans 4 Aspect social 4 Criticism and interpretation 4 Musique 4 Musique vocale 4 Social aspects 4 Vocal music 4 Analyse et appréciation 3 Analysis, appreciation 3 Ballade 3 Balladen 3 Ballades 3 Ballads 3 Cantates 3