"The Ring of the Nibelung" is a cycle of four operas composed by Richard Wagner. The operas are titled "Das Rheingold," "Die Walküre," "Siegfried," and "Götterdämmerung." The story revolves around a magical ring that grants power and control, leading to conflict among gods, heroes, and mythical creatures. The narrative is based on Germanic and Norse mythology, particularly the Nibelungenlied. It explores themes of love, betrayal, and the quest for power. The cycle is renowned for its complex characters and innovative use of leitmotifs, which are musical themes associated with specific characters or ideas.