A Popular History of the Art of Music From the Earliest Times Until the Present
CHAPTER XII--THE RISE OF POLYPHONY; OLD FRENCH AND GALLO-BELGIC
SCHOOLS 148-159
Origin and meaning of polyphony--monodic and homophonic--canonic imitation--chords as incidents--variety and unity--early French school--Coussemaker's researches--Léonin--descant--Pérotin--names of pieces--Robert of Sabillon--Pierre de la Croix--Jean of Garland--Franco of Paris--Jean de Muris--fleurettes--John Cotton--Machaut--Gallo-Belgic school--Dufay--Hans de Zeelandia--Antoine de Busnois.