Columbia subject headings:
Church music--Catholic Church--21st century--Congresses.
Composition (Music)--Congresses.
Sacred vocal music--Congresses.
Harvard subject headings:
Church music--Catholic Church--21st century--Congresses.
Composition (Music)--Congresses.
Sacred vocal music--Congresses.
Princeton subject headings:
Church music--Catholic Church--21st century--Congresses.
Composition (Music)--Congresses.
Sacred vocal music--Congresses.