Opera in German such as opera seria. Some Baroque composers, such as Reinhard Keiser, did try to challenge Italian dominance, and the theatre principal Abel Seyler became an eager promoter of German opera in the 1770s, but it was only with the appearance of Mozart that a lasting tradition of serious German-language opera was established. Mozart took the simple, popular genre of "Singspiel" and turned it into something far more sophisticated. Beethoven followed his example with the idealistic "Fidelio"; and with "Der Freischütz" of 1821, Weber established a uniquely German form of opera under the influence of Romanticism. Weber's innovations were eclipsed by
L'écume des jours (opera) Days") for soprano, mezzo-soprano, tenor, chorus and orchestra (1981) 36' Text by Boris Vian (French) Sources L'écume des jours (opera) L'écume des jours (English: "The Foam of Days") is an opera in three acts (14 scenes) by the Russian composer Edison Denisov. The French (also German and Russian) text is by the composer based on the novel of the same title by Boris Vian. It was composed in 1981. The idea of this opera came to Denisov in the beginning of the 1970s and he worked on it up until 1981. In the libretto, written in French, Denisov not only