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
Found and Lost (opera) Found and Lost (opera) Found and Lost is a one-act opera by Emily Hall, first performed in January 2016, which "straddles the worlds of opera, art installation and promenade theatrical event". The opera, which lasts about 50 minutes, is to a libretto by Matthew Welton. It is described as "an opera installation...written using found texts within Corinthia Hotel London" – these texts include for example checklists for room service staff. The opera was created by the composer whilst she was an artist-in-residence at the Corinthia Hotel in London. The composer's brief was to write an opera to take place in