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
Italians piano and violin. Most notable Italians composers include the Giovanni Pierluigi da Palestrina, Claudio Monteverdi, the Baroque composers Scarlatti, Corelli and Vivaldi, the Classical composers Paganini and Rossini, and the Romantic composers Verdi and Puccini, whose operas, including "La bohème", "Tosca", "Madama Butterfly", and "Turandot", are among the most frequently worldwide performed in the standard repertoire. Modern Italian composers such as Berio and Nono proved significant in the development of experimental and electronic music. While the classical music tradition still holds strong in Italy, as evidenced by the fame of its innumerable opera houses, such as La Scala of Milan