Modern counterpoint education is greatly indebted to "Gradus ad Parnassum", and Fux presented the ideas with such clarity and focus that both subsequent and modern counterpoint texts continue to cite his work, from the book by Albrechtsberger ("Gründliche Anweisung zur Komposition") to 20th century examples such as the book by Knud Jeppesen ("Counterpoint: The Polyphonic Vocal Style of the Sixteenth Century"). Furthermore, "Gradus ad Parnassum" is a noteworthy historical document in that it clearly delineates the stylistic distinction of the entire baroque era between an antique and sacred style and a more modern and largely secular style.