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
Christine Weidinger among others. In 1988 she performed the role of Eupaforice in Carl Heinrich Graun's "Montezuma" at the Spoleto Festival USA. After a 16-year absence, she returned to the Metropolitan Opera in 1992 to sing the title role in Rossini's "Semiramide". Some of the many other roles Weidinger has sung on stage are Arminda in "La finta giardiniera", the Countess in "Le comte Ory", Gilda in "Rigoletto", Konstanze in "The Abduction from the Seraglio", Leonora in "Il trovatore", the title role in Rossini's "Armida", Armida in Handel's "Rinaldo" (with Marilyn Horne) and Amenaide in "Tancredi". She also performed the demanding Donizetti