This recording of works by Johann Christoph Friedrich Bach, the least well-known of the four composer sons of Bach, marks the completion of the FBO’s highly acclaimed series “Bach’s Sons” on the Carus label. Unlike his prominent brothers Carl Philipp and Johann Christian, the “Bueckeburg Bach” never ventured beyond the provinces, serving as a court musician for forty years at the court of the Count of Schaumburg-Lippe. But his music is anything but provincial. It moves impressively between the styles of both brothers, combining the artistic demands of Carl Philipp with the light Italian tone of the younger brother Johann Christian, and so defies easy musical categorization.