Columbia subject headings:
Music--Switzerland--Zurich--20th century--History and criticism.
Music-halls--Switzerland--Zurich--20th century--History.
Harvard subject headings:
Music--Switzerland--Zurich--20th century--History and criticism.
Music-halls--Switzerland--Zurich--20th century--History.
Princeton subject headings:
Music--Switzerland--Zurich--20th century--History and criticism.
Music-halls--Switzerland--Zürich--20th century--History.