Jana Jonášová with Bendlová and then at the Academy of Performing Arts in Prague with Teodor Šrubař. She made her professional opera debut in 1965 at the Liberec Theatre as Konstanze in Wolfgang Amadeus Mozart's "The Abduction from the Seraglio". That same year she became involved with the Chamber Opera Prague. She remained committed to the Liberec Theatre through 1970 and then joined the National Theatre in Prague where she initially sang minor roles and worked in the opera chorus. In 1973 Jonášová was promoted to principal sopranos at the National Theatre and she quickly became one of the house's most important
A Night at the Opera (film) the window of her hotel room. Ricardo has an altercation with Lassparri, which results in both Rosa and Driftwood being fired from the opera company by Gottlieb. The boys decide to seek revenge by sabotaging the opening night performance of "Il trovatore" ending with the abduction of Lassparri, forcing Gottlieb to substitute Ricardo and Rosa in his place. The audience clearly prefers Baroni over Lassparri and the latter is booed and hit with an apple after he attempts to return to the stage. The film ends with Driftwood and Fiorello attempting to negotiate another contract, as Rosa and Ricardo sing