two Lampertis, Sembrich made her debut in opera at Athens as Elvira in Bellini's I Puritani on June 3, 1877. She not only sang Puritani, but also Dinorah, Lucia di Lammermoor, Robert le Diable and La Sonnambula! It is a testament to her proper early training and intelligence that a 19-year-old soprano could learn so many roles in a foreign language so quickly. In 1883, Marcella Sembrich went to the United States to sing in the newly founded Metropolitan Opera company. She made her Met debut as Lucia in the company premiere of Lucia di Lammermoor on October 24, 1883, she was also the Met's first Elvira in I Puritani, Violetta in La Traviata, Amina in La Sonnambula, Gilda in Rigoletto, Marguerite in Les Huguenots and Rosina in Il Barbiere di Siviglia. Sembrich returned to the Met in 1898. In total, she sang more than 450 Met performances in her 11 seasons there, and remained associated with the company until 1909, when the silver jubilee of her Met debut was celebrated with a farewell gala. She gave recitals until 1917. After this date, she taught students from the Curtis Institute in Philadelphia and at the Juilliard School of Music. Her students included Alma Gluck, Hulda Lashanska, Queena Mario, Dusolina Giannini, Josephine Antoine, Natalie Bodanya, Polyna Stoska, Jane Pickens. Additionally, some of her students in turn became important vocal teachers around the country. Among them were Anna Hamlin (teacher of Judith Raskin) at Smith College, Edith Piper and Florence Page Kimball (teacher of Leontyne Price) at Juilliard, Eufemia Gregory (teacher of Anna Moffo, Judith Blegen, Georgyn Geetlein, Suan Munzer and Frank Guarrera) at the Curtis Institute.