Contains more than 7400 "articles that range from clear, concise definitions of musical ideas and terms to extended surveys of musical forms and styles, with specialist coverage of virtually every musical subject. It places music in its social and cultural context, with a range of new entries on topics such as politics, religion, psychology, and computers. The book covers current research in and approaches to music, including analysis, theory, ethnomusicology, and performance practice. All varieties of musical forms are convered, including jazz, popular music, and dance."