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
Hansel and Gretel (opera) the right side is a cage, and around it is a fence of gingerbread children. Unable to resist temptation, they take a little bit of the house and nibble on it. "Scene 3" As the children nibble, a voice calls out, "Nibbling, nibbling, little mouse! Who's nibbling on my little house?" Hansel and Gretel decide that the voice must have been the wind, and they begin to eat the house. As Hansel breaks off another piece of the house, the voice again calls out, "Nibbling, nibbling, little mouse! Who's nibbling on my little house?" Hansel and Gretel ignore the voice,