Columbia subject headings:
Harvard subject headings:
Dance--History--21st century--Congresses.
Music theater--21st century--History and criticism--Congresses.
Rihm, Wolfgang--Criticism and interpretation--Congresses.
Princeton subject headings:
Dance--History--21st century--Congresses.
Music theater--21st century--History and criticism--Congresses.
Rihm, Wolfgang--Criticism and interpretation--Congresses.