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) has him show her his finger. He puts out a bone instead, and she feels it instead. Disappointed that he is so thin, the witch calls for Gretel to bring out raisins and almonds. As the witch tries to feed Hansel, Gretel steals the wand from the witch's pocket. Waving it towards Hansel, Gretel whispers, "Hocus pocus, holderbush! Loosen rigid muscles, hush!" As the witch turns around and wonders at the noise, Hansel discovers that he can move freely again. The witch tells Gretel to peek inside the oven to see if the gingerbread is done. Hansel softly calls out