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
Cristoforo Colombo (opera) performed in a revised version at La Scala, Milan. It had a number of performances throughout Italy, many of them conducted by Arturo Toscanini, and in Buenos Aires. The opera's North American premiere was presented by the Philadelphia-Chicago Grand Opera Company at the Philadelphia Metropolitan Opera House on November 20, 1913, with Titta Ruffo in the title role, Rosa Raisa as Queen Isabella of Spain, Amedeo Bassi as Don Fernan Guevara, and Gustave Huberdeau as Don Roldano Ximenes. Despite initial stage success, a massive cut of the first version, of some 100 pages of orchestral score, led to the published