Columbia subject headings:
Guitar--Italy--Florence--History--17th century--Congresses.
Harvard subject headings:
Guitar--History--Congresses.
Guitar--Italy--History--Congresses.
Guitar--Spain--History--Congresses.
Music--Italy--Florence--17th century--Congresses.
Music--Spain--17th century--Congresses.
Princeton subject headings:
Guitar--Italy--Florence--History--17th century--Congresses.