Columbia subject headings:
Music--16th century--History and criticism.
Musica ficta.
Musical pitch.
Vocal music--16th century--History and criticism.
Harvard subject headings:
Music theory--History--16th century.
Musica ficta.
Performance practice (Music)--History--16th century.
Vocal music--16th century--History and criticism.
Princeton subject headings:
Music--16th century--History and criticism.
Musica ficta.
Musical pitch.