French composer and musicologist, Jacques Chailley (1910-1999) studied at the Paris Conservatoire. He was passionate about reviving medieval music and this inspired his detailed study book of modes, The Imbroglio Modes.

Chailley''s saw him teach musical history, harmony and the notation and sight reading of medieval music, as well as publish many books on the subject. Chailley''s The Imbroglio Modes begins by explaining what a mode is before addressing the different modes, intervals, chords, medieval tones and modern tones, among other aspects. For all ancient music enthusiasts, Chailley''s The Imbroglio Modes provides brilliant detail and expertise to ensure complete understanding of all modes.