Some consider his music highly imaginative and melodic, while others hear his most famous work, Leonora (due to its setting by Beethoven for his only opera a year later), as mere dull formula-writing.
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His grandfather Michael Pär was a regimental band member from Peterwardein (today Petrovaradin, part of Novi Sad).
His Leonor (1798) forms the basis for the libretto which Ludwig van Beethoven used for the opera Fidelio; it was also set by Pierre Gaveaux as Léonore, ou L’amour conjugal, by Simon Mayr as L'amor coniugale, and by Ferdinando Paer as Leonora.
Luigi Ferdinando Marsigli | Ferdinando Stanley, 5th Earl of Derby | Ferdinando Paer | Ferdinando I de' Medici, Grand Duke of Tuscany | Ferdinando Gorges | Pier Ferdinando Casini | Ferdinando Martini | Ferdinando Fairfax, 2nd Lord Fairfax of Cameron | Ferdinando Ughelli | Ferdinando Sarmi | Ferdinando de' Medici | Ferdinando d'Adda | Carlo Ferdinando Landolfi | San Ferdinando | Francesco Ferdinando d'Avalos | Ferdinando Paër | Ferdinando III de' Medici | Ferdinando II de' Medici, Grand Duke of Tuscany | Ferdinando Gliozzi | Ferdinando Gentile | Ferdinando Fairfax | Ferdinando de' Medici, Grand Prince of Tuscany | Ferdinando de' Medici, Grand Duke of Tuscany | Ferdinando d' Aragona y Guardato, 1st Duke of Montalto | Ferdinando Carulli | Cardinal Ferdinando de' Medici |
In addition to the roles she created in Rossini's operas, she also sang in the world premieres of operas by several composers who are lesser known today, including Pietro Raimondi, Simon Mayr, and Ferdinando Paër.
At the end of her first season she went to Paris, and had lessons from the Antonio Sacchini, whose last pupil she was, and at different periods of her career she also studied with Morelli, Ferdinando Paer, and Friedrich Heinrich Himmel.
Other foreign operas of note, the Tarare of Antonio Salieri, The Freebooters by Ferdinando Paer, The Robber's Bride by Ferdinand Ries, and Heinrich Marschner's Der Vampyr, were afterwards produced at the English Opera House for the first time in England.