This annotated chronology of western music is the third in a series of outlines on the history of music in western civilization. It contains a one hundred and twenty page annotated bibliography, followed by a detailed, documented outline that is divided into ten chapters. Each chapter is written in chronological order with every line being documented by means of abbreviations which refer to the annotated bibliography. There are short biographies of the theorists and detailed discussions of their works. The information on music is organized by classes of music rather than by composer. Also included are lists of manuscripts with descriptions of their contents and notations as to where they may be found. The material for the outline has been taken from primary and secondary sources along with articles from periodicals.