Like its predecessor, Cambridge University Press's first volume of Schenker studies published in 1990, this book offers a broad and inclusive survey of the field of Schenkerian research. It gives an accurate, if necessarily partial, view of the field at the present time; a number of the essays could not have been written twenty, or even ten, years ago. Only twenty years have passed since Ernst Oster's translation of Der freie Satz appeared. This publication has been the catalyst for the ambitious scholarly enterprise of publishing the entire corpus of Schenker's work in English translation. A significant part of this enterprise has been achieved with the translation of the three volumes of Das Meisterwerk in der Musik as well as other important works by Schenker. Perhaps the most striking recent development, however, has not been a publication. Rather it has been the availability to scholars of Schenker's Nachlass, at both the Oster Collection of the New York Public Library and the Jonas Collection at the University of California, Riverside. In addition, Mrs. Felix Salzer has generously granted access to items in her husband's private collection. In so doing she has contributed to the realization of Felix Salzer's long-held goal of bringing Schenker's unpublished work to light. Thus an almost entirely new area of research has been opened up: the development of Schenker's theories as revealed by the study of his voluminous papers.