The psychological approach to music -- 2. Musical scales -- 3. The interval -- 4. Melody -- 5. Language aspects of music -- 6. Nature of musical taste -- 7. The measures of musical taste -- 8. The nature of musical abilities -- 9. The measurement of musical abilities -- 10. Applications of music to industry and therapy -- Epilogue -- Appendix A: The musical taste of an American elite -- Appendix B: Glossary