Columbia subject headings:
Britten, Benjamin, 1913-1976.
Music--20th century.
Music--England--History and criticism.
Tippett, Michael, 1905-1998.
Harvard subject headings:
Britten, Benjamin, 1913-1976--Criticism and interpretation.
Music--England--20th century--History and criticism
Tippett, Michael, 1905-1998--Criticism and interpretation.
Princeton subject headings:
Britten, Benjamin, 1913-1976. Works.
Music--20th century--History and criticism.
Music--England--History and criticism.
Tippett, Michael, 1905- Works.