Aesthetics and the art of musical composition in the German Enlightenment : selected writings of Johann Georg Sulzer and Heinrich Christoph Koch / edited by Nancy Kovaleff Baker [2nd work] and Thomas Christensen [1st work].
part 1. General theory of the fine arts : (1771-74), selected articles / Johann Georg Sulzer -- part 2. Introductory essay on composition : vol. II (1787) / Heinrich Christoph Koch.