Dedicate to Wilhelm Ehmann, This book is the first effort to organize the teaching of Group Vocal Technique into a method for providing vocal instruction to 'amateur' choirs. This book has a two-fold purpose: (1) to provide documentation of 'Group Vocal Technique' and serve as the first source of such an approach to vocal education and (2) to provide the choral conductor with a practical resource of written materials that can be used with choirs. Frauke Hasseman is a Professor of Conducting at Westminster Choir College in Princeton, New Jersey. She is recognized as one of the world's experts in the field of Group Vocal Technique. James M. Jordan is Associate professor of Conducting at the Westminster Choir College in Princeton, New Jersey. He is conductor of the Westminster Chapel Choir.