Columbia subject headings:
Harvard subject headings:
Cantus firmus.
Performance practice (Music)--History--16th century.
Performance practice (Music)--History--To 1500.
Singing--Methods
Vocal improvisation (Music)--Textbooks.
Princeton subject headings:
Cantus firmus.
Performance practice (Music)--History--16th century.
Performance practice (Music)--History--To 1500.
Singing--Methods.
Textbooks.
Vocal improvisation (Music)--Textbooks.