Bach Four Musical Part Chorale Writing Technique Research

is the German composer Bach (J.S.BACH 1685-1750) a history of Organum (Organum), Discantus (Discant), Fobl East (Fauxbourdon), Conductus (Conductus ) and other early polyphonic music to explore the road; at Notre Dame School of Music, Netherlands School of Music, Venetian school of music, Naples school of music, Rome school of music, such as the Venice opera based on creative practice; in from the 15th century Since the main theme music polyphony irresistible to the development of the Middle Ages, Renaissance, Baroque predecessors in the early experience of the concluding harmony treasures. <371 four Tones Department Chorale> is the sound art world in the landmark book: it is the past and so many voices, both musical harmony of artistic expression through an unprecedented height, but also for the classical, romantic, and even contemporary music has opened the way to become endless, with the finish multi-voice music treasure.In this paper, Bach as the main object of study, four sections were discussed: The first chapter introduces melodic development practices.The second chapter introduces The harmony and style in-depth research and analysis.The third chapter discusses the The Polyphonic practices. The fourth chapter is by Comment on research and study, leads to China music inspiration.