Weber's opera Euryanthe was written in 1823 and contains much that anticipates Wagner, as well as being a masterpiece in its own right. It was intended as the crowning work in the career of this seminal figure in the German operatic tradition of the early nineteenth century. Yet through its defective libretto it has virtually disappeared from the modern repertoire, despite containing, in Wagner's words, Weber's "most beautiful, richest, and most masterful...