This collection of pieces in D is the longest in all the books of Couperin and contains several masterpieces. Grace and nobility seem to reign. In his official portrait Couperin has one hand on the score to “Les Idées Heureuses”. It is a work of sonorous nostalgia and melancholy. ” La Garnier” a tribute work, sings out in the tenor range of the harpsichord combining sensuousness and rhetoric in a most poetical homage. “La Terpsicore” delineates dance gestures and paints the muse of movement. Debussy in his preludes owes much to the spirit and genius of this piece. The dance movements live in the courtly world of the chateau (the gavotte and courantes) or the rough and tumble world of the barnyard or village square (rigaudon and passepied). There are suites within the suite (for Diane) and there is not one genre or character piece that is not inspired in its choices of delicate dissonance and voluptuous harmonies.