Columbia subject headings:
Byrd, William, 1539 or 1540-1623. Vocal music.
Counterpoint.
Harvard subject headings:
Byrd, William, 1539 or 1540-1623. Vocal music.
Counterpoint--History.
Princeton subject headings:
Byrd, William, 1539 or 1540-1623. Works, vocal.
Counterpoint--History.