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
Maddalena (opera) Maddalena (opera) Maddalena () is an opera in one act by the Russian composer Sergei Prokofiev, who also wrote the libretto based on a play of the same name by Magda Gustavovna Lieven-Orlov (under the pen name Baron Lieven). That play was in turn based on Oscar Wilde's play "A Florentine Tragedy". Although Prokofiev had already written four operas (the earliest being "The Giant" which he composed at the age of eight and was written down by the composer's mother), "Maddalena" is the first of his works in this genre to which he gave an opus number (op. 13). The