Book excerpt: International in scope, this book is designed to be the pre-eminent reference work on the English-speaking theatre in the twentieth century. Arranged alphabetically, it consists of some 2500 entries written by 280 contributors from 20 countries which include not only top-level experts, but, uniquely, leading professionals from the world of theatre. A fascinating resource for anyone interested in theatre, it includes: - Overviews of major concepts, topics and issues; - Surveys of theatre institutions, countries, and genres; - Biographical entries on key performers, playwrights, directors, designers, choreographers and composers; - Articles by leading professionals on crafts, skills and disciplines including acting, design, directing, lighting, sound and voice.