Each of Bach's six French suites is written in a different key with no harmonic relationship to one another, unlike most of his other works. Within each suite, all of the movements are in the same key and follow standard binary form. In the traditional Baroque suite, there are four movements: Allemande, Courante, Sarabande, and Gigue. However, Bach also includes lesser-used dances such as the Polonaise, Bourée, and Air. Noted Bach expert Dr. Hans Bischoff edited this collection.