Columbia subject headings:
Music--Austria--Vienna--History and criticism--Congresses.
Sibelius, Jean, 1865-1957--Criticism and interpretation--Congresses.
Sibelius, Jean, 1865-1957--Homes and haunts--Congresses.
Harvard subject headings:
Music--Austria--Vienna--History and criticism--Congresses.
Sibelius, Jean, 1865-1957--Criticism and interpretation--Congresses.
Sibelius, Jean, 1865-1957--Homes and haunts--Congresses.
Princeton subject headings:
Music--Austria--Vienna--19th century--Congresses.
Sibelius, Jean, 1865-1957--Congresses.
Sibelius, Jean, 1865-1957--Friends and associates--Congresses.
Sibelius, Jean, 1865-1957--Homes and haunts--Austria--Vienna--Congresses.