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 Gioconda (opera) opera", the equivalent of French "Grand-Opéra". Ponchielli revised the work several times; the version that is played today was first given in 1880. There are several complete recordings of the opera, and it is regularly performed, especially in Italy. It is one of only a few operas that features a principal role for each of the six major voice types. "La Gioconda" was first performed at the Teatro alla Scala, Milan, on 8 April 1876. It was especially successful in its third and final version first seen at the same theatre on 28 March 1880. The opera had its American