c. 1. History of music: Primitive, ancient, medieval, and modern European music; modern instruments.- v. 2. History of music: Music in America; special articles.- v. 3-4. Great composers: a series of biographical studies. - v. 5. Religious music of the world. - v. 6. Vocal music and musicians. - v. 7. Opera: history and guide. - v. 8. Theory of music and piano technique.- v. 9-10. University dictionary of music and musicians. - v. 11-12. Musicians' practical instructor.