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
La Scala Theatre Ballet La Scala Theatre Ballet The La Scala Theatre Ballet () is the resident classical ballet company at La Scala in Milan, Italy. One of the oldest and most renowned ballet companies in the world, the company predates the theatre, but was officially founded at the inauguration of La Scala in 1778. Many leading dancers have performed with the company, including Mara Galeazzi, Alessandra Ferri, Viviana Durante, Roberto Bolle and Carla Fracci. The official associate school of the company is the La Scala Theatre Ballet School (), a constituent of the La Scala Theatre Academy (). It is one of the