Joseph Bodin de Boismortier’s [VI] Sonates en Trio Pour deux Violons avec la Baße Op. 18 appeared in 1727. Each consists of four or five movements, at least one being a dance; most of the slow movements feature the familiar Corellian “walking bass”, while one of the fast movements in each sonata is fugal or based on imitative entries. Though adhering to Italian models, the sonatas also display certain French elements, along with characteristics of Boismortier’s own individual style, and their harmonic language is especially rich. These expertly crafted works — veritable gems of high-baroque French instrumental music — deserve to become part of the repertoire of all period instrumental groups.