Anton Haizinger heard Haizinger sing in concerts, and offered him an engagement at the theatre; Haizinger gave up teaching. Haizinger's first roles at Theater an der Wien, in 1821, were in two operas by Rossini, as Gianetto in "La gazza ladra" and Lindoro in "L'italiana in Algeri". He soon became well-known in Vienna. The role of Adolar in Weber's opera "Euryanthe", premiered in 1823 at the Theater am Kärntnertor, was created for him, and he was a soloist in the premiere in 1824 of Beethoven's Ninth Symphony at the same theatre. He continued studies with Antonio Salieri. At this time, Italian opera
Fosca (opera) Fosca (opera) Fosca is an opera seria in four acts by Brazilian composer Antônio Carlos Gomes to an Italian-language libretto by Antonio Ghislanzoni based on 's 1869 novel "La festa delle Marie". The opera premiered at La Scala in Milan on February 16, 1873. It was a failure because of a dispute between lovers of bel canto and supporters of Wagnerian music-drama. Gomes revised it in 1877, and the premiere of the new version (this time described as a melodramma) on February 7, 1878, also at La Scala, was a success. Since then, performances of the opera, mostly in Brazil,