Richard Wagner was a composer and conductor during the German Romantic period. His representative works include "The Ring of the Nibelung", "Tristan und Isolde", "Pastoral" Xifal" and so on. These works are all large-scale musicals. Among them, "The Ring of the Nibelungs" is one of his most famous works. There are four of them, namely "Das Rheingold", "The Valkyrie" and "Siegfried". "German" and "Twilight of the Gods".