After graduating from Stiftsgymnasium Melk[1] Haselböck studied with Rita Streich at the Vienna Music Academy and continued at the Hochschule für Musik Detmold, with Ingeborg Ruß, finishing with diplomas for both performing and vocal education.
She performed Dorabella (Così fan tutte) at the Concertgebouw Amsterdam, and the Second Lady (The Magic Flute) at the Mozart Festival Reinsberg, the Theater an der Wien and the Grand Théâtre de Luxembourg.
2009 she first sang Magdalene (Die Meistersinger von Nürnberg), 2012 Brangäne (Tristan und Isolde) and 2013 Azucena (Il Trovatore) at the Tyrolian Festival Erl and Gertrud/Mother, (Hansel and Gretel at the Graz Opera House.
Her repertoire includes the major works by Bach, Haydn, Händel, Mendelssohn, Beethoven, Mahler, Mozart, Schubert, Zemlinsky (Maeterlinck Songs), Wagner (Wesendoncklieder) and Verdi (Requiem).
„... Hermine Haselböck, a magnificent Fricka, has enormously developed further since her Brangäne 2012, her voice has gained homogeneity and roundness and she is as person and stage appearance an excellent actress with strong presence ...“ THE OPERATIC MUSICOLOGIST - Daniel Url 12.7.2015 >> „As Brangäne Hermine Haselböck once again impressed me with her powerful and still very beautiful voice.