The book is designed as a reference text for teachers of singing, singers, choral conductors and organists, speech and voice therapists, laryngologists and other health professionals, psychologists and those in linguistics. It discusses the physiological, psychological, musical and emotional aspects of the voice, particularly as they relate to singing but also to speaking. Important features of this work are the clear illustrations, the broad coverage of the topic and the extensive bibliography. The book provides a greater understanding of how the voice works and the many factors involved in singing as well as an objective discussion of singing without reference to specific techniques.