Barbara Krieger studied German and English literature and musicology in Mainz before studying voice at the Mozarteum in Salzburg, where she graduated with honours in 1996. She already began concertizing during her studies and participated in international competitions. She was a prize winner at the renowned Aslico voice competition of La Scala. Her first engagements and tours led the singer - initially a mezzosoprano - to Salzburg, Erfurt, Klagenfurt, Zagreb and to the Vienna Klangbogen Festival. In 1997, she was a member of the ensemble of the Vienna State Opera. Afterwards, she appeared as a lyric-dramatic soprano at prestigious opera houses including Gran Teatru del Liceu Barcelona, in Bregenz, Leipzig, Karlsruhe and at the Nationaltheater in Weimar, among others.
Other career highlights include a concert tour with the world-famous bass-baritone Bryn Terfel (2007) and her appearance at Festival MúsicaMallorca with Verdi's Messa da Requiem in Teatre Principal de Palma. In 2008, Barbara Krieger performed in a gala concert with star tenor Roberto Alagna and in the summer of 2009, she gave a riveting performance at Classic Open Air in Berlin, this time with José Carreras at her side. In 2007, Barbara Krieger initiated the CLASSIC OPEN AIR concert series in Dresden in front of the Frauenkirche and from 2007 to 2011 brought thousands of music lovers together to help various charity organisations.