She has been developing her own projects for solo theatrical performances, chamber music or large orchestra with directors such as Klaus Ortner, Jorge Lavelli, Julian Pölsler, Christina Pfrötschner and others for several years.
Together with members of the Berliner Philharmoniker and the Bamberg Symphony Orchestra, she appeared on stage in Stravinsky's "The Story of the Soldier" and also played "Eight Songs for a Mad King" by Peter Maxwell Davies.
This was followed in 2017 by Edgar A. Poe's "The Mask of the Red Death" at the Swiss Alp Classic Festival in Andermatt with Clemens Hellsberg and members of the Vienna Philharmonic.
For several years, Isabel Karajan collaborated with directors Klaus Ortner, Julian Pölsler and Christina Pfrötschner on their own musical theater projects.
She was also in numerous film and television productions by Wolfgang Murnberger, Holger Barthel, Nina Companéez, Alain Michel Blanc, Erhard Riedlsperger, Michi Riebl, Rupert Henning and Patricia Mazuy.