Columbia subject headings:
Holy Roman Empire--Court and courtiers.
Music--500-1400--History and criticism.
Music--Holy Roman Empire--History and criticism.
Harvard subject headings:
Holy Roman Empire--Court and courtiers.
Music--500-1400--History and criticism
Music--Holy Roman Empire--History and criticism.
Princeton subject headings:
Holy Roman Empire--Court and courtiers.
Music--500-1400--History and criticism.
Music--Holy Roman Empire--History and criticism.