After her studies, she was employed at the National Theater in Mannheim, where she sang close to 30 roles such as Rosina in The Barber, Marcellina in Figaro, the Third Lady in Die Zauberflöte, Annina in The Rose Cavalry, Magdalena in Wagner's Die Meistersinger and many mezzo and alto roles in Wagner's Ring. Carolina also appeared as a guest at the theaters in Darmstadt, Stuttgart, Saarbrücken and Luxembourg.Her concert and opera repertoire is large, she sings basically all works by Bach, Handel, Mozart, Rossini and Verdi as well as newly written Swedish concert works by F. Österling, J. Bohlin, F. Sixten and R. Martinsson. Carolina Bengtsdotter Ljung has received a number of large scholarships from the Royal Academy of Music as well as from the Friends of the Drottningholm Theater and the Jussi Björling Prize and the Richard Wagner Society's Bayreuth Scholarship.