Columbia subject headings:
Music and mythology--Congresses.
Orpheus (Greek mythological character)--Songs and music--Congresses.
Harvard subject headings:
Music and anthropology--Congresses.
Music and mythology--Congresses.
Mythology, Greek, in music--Congresses.
Orpheus (Greek mythological character)--Congresses.
Orpheus (Greek mythological character)--Songs and music--Congresses.
Princeton subject headings:
Music and mythology--Congresses.
Orpheus (Greek mythological character)--Songs and music--Congresses.