Bella Alten operatic career included six Metropolitan premiere performances – Adele in Die Fledermaus (1905), Gretel in Hänsel und Gretel (1905), Saffi in Der Zigeunerbaron (1906), Olga in Fedora (1906), Columbina in Le Donne Curiose (1912), and Lisetta in L'amore Medico (1914). In November 1905 when she sang Gretel in the premiere Metropolitan performance of Hänsel und Gretel, the composer Engelbert Humperdinck was in the audience. This opera received 11 performances that first season and was selected by Theodore Roosevelt's wife as a benefit for the Legal Aid Society. Alten sang Gretel in this opera every season she was with the Met
Opera in German German opera. Weber completely eliminated spoken dialogue, producing a "through-composed" work where the distinction between recitative and aria is becoming blurred. Its lessons would not be lost on future composers, including Richard Wagner. Weber's most important successor in the field of Romantic opera was Heinrich Marschner, who further explored the Gothic and the supernatural in works such as "Der Vampyr" (1828) and "Hans Heiling" (1833). On the other hand, it was with comic opera that Albert Lortzing scored his biggest successes. The popularity of pieces such as "Zar und Zimmermann" continues in Germany today, though Lortzing's operas are rarely staged