Lucia Elizabeth Vestris she showed off her fabulously perfect legs, launched her career as a scandalous beauty. From then on she remained an extraordinary favourite in opera, musical farces, and comedies until her retirement in 1854. At the King's Theatre she sang in the English premieres of many Rossini operas, sometimes conducted by the composer himself: "La gazza ladra" (as Pippo, 1821), "La donna del lago" (as Malcolm Groeme, 1823), "Ricciardo e Zoraide" (as Zomira, 1823), "Matilde di Shabran" (as Edoardo, 1823), "Zelmira" (as Emma, 1824), and "Semiramide" (as Arsace, 1824). She excelled in "breeches parts," and she also performed in Mozart operas,
La pietra del paragone back with her signature on it. The Count recognizes the signature and comes rushing from his rooms. To general amazement Clarice throws off her disguise and the lovers are finally reconciled. The Count orders a celebration feast and all the guests head off to toast the happy couple and enjoy the promised banquet. La pietra del paragone La pietra del paragone (The Touchstone) is an opera, or melodramma giocoso, in two acts by Gioachino Rossini, to an original Italian libretto by Luigi Romanelli. "La pietra del paragone" was first performed at La Scala, Milan, on 26 September 1812. It was