From 1989 to 1995 Stephan Siegenthaler held the position as solo clarinettist in the Biel symphony orchestra. After a successfully career in the medical industry he returned in 2008 to the professional music arena while appointed rector of the musical department in the Lucerne University. Stephan Siegenthaler will play as a soloist with the Prague Chamber Orchestra, the Berg Chamber Orchestra of Prague and the Capella Istropolitana in Bratislava