Write counterpoint with Fux and Goetschius

Take Joseph's seat. Write a line against one of Fux's cantus firmi in any of his five species, and Aloysius marks your mistakes the way he marks Joseph's, in his own words from the Gradus. Or add a part to one of Goetschius's melodies, note against note or two, three and four to a beat, and have it checked against the rules of his Elementary Counterpoint.