"Richard Wagner composed the opera The Ring of the Nibelung"
Opera in four acts is called The Ring of the Nibelung. In Wagner's opera (1813 - 1883), Alberich is the king nibelung of the dwarfs, who forged a ring that brings both power and in trouble - not very different from Tolkiens Lord of the Rings. Only when Alberich's treasure came into the hands of Gunther and his brother they have received the nibelung title. Wagner's work included four pieces: The Rhine Gold, Valkyrie, Siegfried and Twilight of the Gods. The pieces were compiled between 1851 - 1874.