This volume is presented as a collection of primary research materials for scholars and artists. Each composer presents either a score or some form of documentation of one of his works and in an accompanying essay discusses his music in detail exploring both its aesthetic and structural premises. The purpose of this book is not to present analyses or critical evaluations of this original and diverse body of works but rather for the first time to document the major activities of recent composers working in the important hybrid media of soundtext and soundinstallation. It is hoped that this book will mark the beginning of a general recognition of the importance of such intermedia works as well as encourage future exploration of the aesthetic and structural innovations continued therein. Composers discussed include John Cage Robert Ashley Max Neuhaus Alvin Lucier and Kenneth Gaburo.