Columbia subject headings:
Christian literature, Early--Latin authors.
Latin poetry, Medieval and modern--History and criticism.
Music and literature.
Music--500-1400--History and criticism.
Harvard subject headings:
Christian literature, Early--Latin authors
Latin poetry, Medieval and modern--History and criticism.
Music and literature.
Music--500-1400--History and criticism
Music--Italy--500-1400--History and criticism.
Princeton subject headings:
Christian literature, Early--Latin authors.
Latin poetry, Medieval and modern--History and criticism.
Music and literature.
Music--500-1400--History and criticism.