 It was sold from the shop of Henry Foucault – "" and cost ten " and eleven , ten in bound format.With the exception of the preludes and three dances, there are also found arrangements and five examples of realised , which arrange the second and bass lines of the trios as their starting points.The book suggests that Le Roux was a natural teacher, giving practical advice such as to sing the melodies and accompany them using the trios' thoroughbasses before playing them; it is also demonstrational, providing differing examples of dances and styles.