Columbia subject headings:
Harvard subject headings:
Ernst Ludwig, Landgraf von Hessen-Darmstadt, 1667-1739--Congresses.
Music--Germany--Hesse-Darmstadt--History and criticism--Congresses.
Princeton subject headings:
Ernst Ludwig, Landgraf von Hessen-Darmstadt, 1667-1739.
Music--Germany--Hesse-Darmstadt--History and criticism.