Question: What opera that Gerd Grochowski performed in was the last of four music dramas?
Sentence (from "Götterdämmerung"): Götterdämmerung ( ; Twilight of the Gods), WWV 86D, is the last in Richard Wagner's cycle of four music dramas titled "Der Ring des Nibelungen " ("The Ring of the Nibelung", or "The Ring" for short).
Relevant evidence: Yes