Columbia subject headings:
Catedral de Avila. Capilla de Música--History.
Church music--Spain--Avila--History.
Harvard subject headings:
Catedral de Avila. Capilla de Música.
Church music--Spain--Avila--History and criticism.
Church music--Spain--Avila.
Princeton subject headings:
Catedral de Avila. Capilla de Música--History.
Church music--Spain--Avila--History.