The first publication and exploration of a pathbreaking treatise on what would become a crucial element in the music of Stravinsky and Ravel: the octatonic scale. In 1879, French amateur composer Edmond de Polignac (1834-1901) painstakingly devised a new way to create melodies and harmonies using a scale that alternated half and whole steps. This scale -- known today as octatonic -- was animportant element in the music of Liszt and Rimsky-Korsakov,...