Columbia subject headings:
Byzantine chant--Congresses.
Music, Byzantine--Congresses.
Musical notation--Congresses.
Neumes--Congresses.
Paleography, Musical--Congresses.
Harvard subject headings:
Byzantine chants--Congresses.
Music, Byzantine--Congresses.
Musical notation--Congresses.
Neumes--Congresses.
Paleography, Musical--Congresses.
Princeton subject headings:
Music, Byzantine--Congresses.
Musical notation--Congresses.
Neumes--Congresses.
Paleography, Musical--Congresses.