An outlier in the French harpsichord world, Gaspard Le Roux composed music of unique inventiveness and richness at the end of the reign of Louis XIV. Juxtaposing his pieces with others by Lully, Marais and Francois Couperin, William Christie and Justin Taylor have found the ideal alchemy to do full justice to the myriad colors of these Suites, as virtuosic as they are rich in new emotions.