Music example and charts illustrate the analyses and each essay is fully annotated by the editor. In some cases the results of original research by the editor or by others working in the field are published here for the first time. Much of the material has never before appeared in English. A score embodying the best available musical text. Historical background-what is known of the circumstances surrounding the origin of the work including (where relevant) original source material. A detailed analysis of the music by the editor of the volume or another well-known scholar. Other significant analytic essays and critical comments exposing the student to a variety of opinions about the music.