Columbia subject headings:
Harvard subject headings:
Bayreuther Festspiele--History--20th century.
Opera producers and directors--Germany--Bayreuth.
Opera--Production and direction--History--20th century.
Wagner, Richard, 1813-1883--Performances.
Wagner, Wolfgang, 1919-2010--Interviews.
Wagner, Wolfgang, 1919-2010.
Princeton subject headings:
Bayreuther Festspiele--History.
Interviews.
Music festivals--Germany--History.
Music--Production and direction--Biography.
Stage managers--Germany--Biography.
Theatrical producers and directors--Germany--Biography.
Wagner, Wolfgang,
Wagner, Wolfgang,--Interviews.