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
The New Opera Theatre to found Opera Quotannis, in New York. The New Opera Theatre The New Opera Theatre was a New Orleans-based opera company founded in 1986, with conductor Louise LaBruyère as Music Director and stage director Brian Morgan serving as Artistic Director. It specialized in experimental productions of both ancient and contemporary opera. The ensemble's first production was in April 1987, the world-premiere of Morgan's post-minimalist opera, "s" ("a concerto for stage director"), with Phyllis Treigle as E, and LaBruyère conducting. This was followed later the same year by "Hänsel und Gretel", with identical-twins Libbye and Cyril Hellier in the title roles.