(b Oudenaarde, 26 Jan 1834; d Paris, 8 Nov 1907). Belgian soprano. She studied in Ghent, Paris and Milan and made her début at Venice as Gilda in 1852. At the outset of her career she changed her name to Sax, then to Saxe when the instrument maker Adolphe sued her; when he sued again, she reverted to Sasse and was later known as Sass. While working in Paris as a café-concert singer she came to the notice of Léon Carvalho, director of the Théâtre Lyrique, where she appeared as Countess Almaviva in Figaro in 1859. In the same year, she sang Eurydice in the historic revival of C. W. Gluck's Orphée et Eurydice, in Hector Berlioz's version, with Viardot as Orpheus. Engaged at the Paris Opéra from 1860 to 1877, she sang Elisabeth in the revised Tannhäuser (1861), and created Sélika in L'Africaine (1865) and Elisabeth de Valois in Don Carlos (1867). Her repertory also included Valentine (Les Huguenots), Alice (Robert le diable) and Leonora (Il trovatore). At La Scala she created Cecilia in Carlos Gomes's Il Guarany (1870) and sang Lucrezia Borgia (1877). She also appeared in Brussels, St Petersburg and Madrid.
From The Grove Book of Opera Singers in Oxford Reference.