Charles-Marie Widor established the organ symphony as a genre with his first four Symphonies pour orgue, opus 13 (1872). The preface to this edition of Widor's Symphonie I includes essays on the place of organ music in Widor's oeuvre, his musical heritage, his development of the organ symphony, the first performances and publications, the sources, performance guidelines, and a technical description of the organ of Saint-Sulpice. The general outline of Symphonie I in C Minor was conceived early i...