She studied gardening before training in Cologne as a singer with the German bass Hans Sotin.
She came to widespread international attention singing Gutrune in 1996 in Der Ring des Nibelungen at the Bayreuth Festival.
She sang the principal role of Carlotta in Franz Schreker's Die Gezeichneten at the Salzburg Festival in 2005, recorded and subsequently published on DVD by Opus Arte.
Her debut at the Metropolitan Opera in New York City in the role of the Kaiserin in Die Frau ohne Schatten took place on 7 November 2013.
[1] Since 2018/19 season, she has been a professor of singing at the Hochschule für Musik Franz Liszt, Weimar.