This thesis begins with a historical synopsis of the compositional considerations and processes that inspired Busoni’s Fantasia Contrappuntistica. A meeting in Chicago with Bernhard Ziehn and Wilhelm Middelschulte provided the impetus for the composition of the Fantasia Contrappuntistica. At this meeting, Busoni was shown Ziehn’s solution to the uncompleted Fuga a 3 Soggetti from Bach’s Art of Fugue, as well as Ziehn’s novel compositional technique employing symmetrical inversion of harmonies. Busoni’s efforts following this meeting resulted in four different forms of the Fantasia Contrappuntistica which were published throughout the course of his career. The second section of the thesis surveys the overall structure of the Fantasia...