"Der Ring des Nibelungen" is a four-opera cycle composed by Richard Wagner. It includes the operas Das Rheingold, Die Walküre, Siegfried, and Götterdämmerung. The story revolves around a cursed ring that grants power but brings destruction to its possessor. It explores themes of love, greed, and the struggle between gods and mortals. The narrative is based on Germanic and Norse mythology, featuring characters like Wotan, the chief god, and Brünnhilde, a valiant warrior maiden. The cycle is renowned for its complex music, innovative orchestration, and profound philosophical themes, making it a cornerstone of the operatic repertoire.