Born in Sögel, Germany, Romberger studied music pedagogy at the Hochschule für Musik Detmold, and then voice with Heiner Eckels.
[2] Her repertories are mezzo and contralto parts in Lied, oratorio, and concert, from Baroque to contemporary.
She has collaborated with the conductors Enoch zu Guttenberg, Manfred Honeck, Hermann Max, Ralf Otto, Hans-Christoph Rademann and Christoph Spering, and others.
She made several recordings and has performed internationally, for example singing Beethoven's Missa solemnis in South America.
[3] She performed the solo contralto part in Mahler's Second Symphony in a performance of the Rheingau Musik Festival 2017 at Eberbach Abbey, conducted by Christoph Eschenbach, as well as with Berlin Philharmonic and Andris Nelsons, the SWR Vokalensemble, Chor des Bayerischen Rundfunks [de] and SWR Symphonieorchester.