Baldani was born in Varaždinske Toplice[1] and made her professional opera debut in 1961 at the Croatian National Theatre in Zagreb as Konchakovna in Alexander Borodin's Prince Igor.
In 1965 she made her debut at the Metropolitan Opera in New York City as Maddalena in Giuseppe Verdi's Rigoletto.
Between 1973 and 1987 she was a frequent guest artist at the Vienna State Opera; drawing particular acclaim there as Brangäne in Richard Wagner's Tristan und Isolde.
In 1976 she made her debut at the Paris Opera as Amneris in Verdi's Aida, and made her first appearance at the Opéra de Monte-Carlo in the title role of Georges Bizet's Carmen.
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