<P>This is an excellent reference volume including essays on all aspects of medieval music performance. With forty essays written by experts in the field on everything from repertoire, voices and instruments to basic theory, all aspects of recreation are treated. This guide has already proven indispensable to performers and scholars of medieval music. Chapters on vocal and choral music; various types of ensembles; profiles of specific instruments; instrumentation; performance practice issues; theory; dance; regional profiles of Renaissance music, and guidelines for directors are all treated. It is a comprehensive and authoritative reference by leading performers in the field for a variety of enthusiasts.</P>