Columbia subject headings:
Music theory--History--16th century.
Music--Italy--History and criticism.
Musica ficta.
Harvard subject headings:
Music theory--History--16th century.
Music theory--History--17th century.
Music--Italy--History and criticism
Musica ficta.
Princeton subject headings:
Music theory--History--16th century.
Music--Italy--History and criticism.
Musica ficta.