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
Maria Stader "The Abduction from the Seraglio", two versions (1954 and 1960) of 'Exsultate, jubilate' and the Great Mass, as well as Verdi's Messa da Requiem. She won, the Geneva International Music Competition in 1939, but although she "seemed poised for major stardom... her career was delayed by the outbreak of World War II," according to "Opera News". Later in her career, Stader acquired a reputation as an outstanding Bach interpreter, especially with Karl Richter and Ferenc Fricsay. She recorded the "Requiem" by Antonín Dvořák with Karel Ančerl, and Beethoven's opera "Fidelio" (as Marzelline) with Hans Knappertsbusch. Stader was highly praised for