Since 2012 lecturer at the University of Music and Performing Arts in Vienna. Maria Grün teaches talented children at the Johann Sebastian Bach music school. Lecturer of a master class for violoncello at the Allegro Vivo Summer Academy, which is situated in Horn, Waldviertel.
Concerts as soloist with orchestras such as Symphony Orchestra Innsbruck, Vienna Chamber Philharmonic and European Union Chamber Orchestra. Performing with the Vienna Philharmonic orchestra, with the orchestra of the Vienna State Opera, principal cellist of RSO Vienna. Regular participation at the Vienna Philharmonic Orchestra and at the Ensemble “die Reihe”. Questioned partner for chamber music. CD recordings with the Theophil Ensemble and with the Trio Marc Chagall. Concerts in America, China and Europe.
Class for talented children with Prof. H. Posch, further studies with R. Leopold, V. Erben und R. Latzko. Scholarships of Herbert von Karajan Center, Yehudi Menuhin Foundation „Live music now“. Winner of numerous competitions and awards.