One will obviously find in this Music Theory all the information that appears in every complete music theory on notation, time and rhythm, intervals, tonality, etc,. but here, every chapter is followed by a commentary entitled 'Pour en savoir plus' (To know more), explaining the historical or technical reasons that resulted in the rules and habits that are current in western music.

A large appendix treats subjects that a traditional theory generally does not deal with, such as Gregorian notat...