Over a million words in length, The Oxford Companion to Music is the biggest, most authoritative, and most up-to-date single-volume music reference book available. It provides in-depth coverage of all aspects of music - from composers, musicians, and performers, to genres, instruments, works, and notation. It places music in its social and cultural context, with entries on topics such as politics, religion, psychology, and computers, & is up to date with current research in & approaches to music