Fifty first-rate musical compositions document the development of musical style from the early Middle Ages to the Middle of the 18th century. Among the selections are a Gregorian hymn, an English lute piece, operatic arias, instrumental and vocal motets, a French ballad, as well as works by Vivaldi, Telemann, Pergolesi, Scarlatti, Buxtehude, and other masters. Commentary evaluates style, form and historical setting, and complete compositions or sections of compositions are supplied when possible.