Columbia subject headings:
Church music--Croatia--History and criticism.
Church music--Hungary--History and criticism.
Church music--Romania--History and criticism.
Church music--Serbia--History and criticism.
Church music--Slovenia--History and criticism.
Danube Swabians--Music--History and criticism.
Harvard subject headings:
Church music--Europe, Eastern.
Danube Swabians--Europe, Eastern--Music--History and criticism.
Princeton subject headings:
Church music--Croatia.
Church music--Hungary.
Church music--Romania.
Church music--Serbia.
Church music--Slovenia.
Danube Swabians--Music--History and criticism.