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
Constantinus Fidelio Coene died at Brussels in 1841. Constantinus Fidelio Coene Constantinus Fidelio Coene, a painter of history, genre, and landscape, was born in 1780 at Vilvoorden. He first studied under Hendrik van Assche, and in 1809 removed to Amsterdam and became the pupil of Barbiers. He then went to Brussels, and in 1820 was made Professor at the Academy. His picture of 'Rubens receiving from Charles I. the sword with which he had been knighted ' gained for him the grand prize at Ghent, and is now in the Museum of that city. His 'Soldier returning from the Battle of Waterloo' also