Theresa Kronthaler (born 1979 in Würzburg ) is a German opera singer in the mezzo-soprano voice range. Kronthaler grew up first in Würzburg, but then in Rome . She studied theater and singing in Turin , Berlin and London . In 2008 she made her debut at the Grand Théâtre de Genève , was then engaged from 2009 to 2012 in the ensemble of the Deutsche Oper am Rhein and from 2012 to 2016 at the Komische Oper Berlin . She made guest appearances at the Frankfurt Opera , the Bremen Theater and the Theater an der Wien .