Columbia subject headings:
German literature--20th century--History and criticism.
Music and literature.
Music--20th century--History and criticism.
Musical form.
Harvard subject headings:
German literature--20th century--History and criticism
Music and literature.
Music--20th century--History and criticism
Musical form.
Princeton subject headings:
German literature--20th century--History and criticism.
Music and literature.
Music--20th century--History and criticism.
Musical form.