Marius has been a part of the scandinavian jazz scene for the past 25 years, touring and recording with ensembles such as the Oslo Jazz Ensemble, Geir Lysne Listening Ensemble, Aarhus Jazz Orchestra (Denmark), Ensemble Denada and the Kaba Orchestra.

He plays regulary with all of the symphony orchestras and  professional wind bands in Norway, and his recording credits include more than 150 recordings, some of them awarded the Norwegian Grammy and the German Echo Award.

Marius has also done extencive work for radio, television, theatre and movies.