Columbia subject headings:
Authorship--Congresses.
Industrial music--Congresses.
Music--History and criticism--Congresses.
Popular music--History and criticism--Congresses.
Popular music--Writing and publishing--Congresses.
Harvard subject headings:
Authorship--Congresses
Industrial music--Congresses.
Music--History and criticism--Congresses
Popular music--History and criticism--Congresses.
Popular music--Writing and publishing--Congresses.
Princeton subject headings:
Authorship--Congresses.
Industrial music--Congresses.
Music--History and criticism--Congresses.
Popular music--History and criticism--Congresses.
Popular music--Writing and publishing--Congresses.