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 into a costume. As with most of the theatres at that time, La Scala was also a casino, with gamblers sitting in the foyer. Conditions in the auditorium, too, could be frustrating for the opera lover, as Mary Shelley discovered in September 1840: At the Opera they were giving Otto Nicolai's "Templario". Unfortunately, as is well known, the theatre of La Scala serves, not only as the universal drawing-room for all the society of Milan, but every sort of trading transaction, from horse-dealing to stock-jobbing, is carried on in the pit; so that brief and far between are the snatches