Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Feldmusik Luzern
- Zürcher Kammerorchester
- argovia philharmonic
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- Euroconcerts Suisse Sarl
- GMkonzerte / Odessa Classics
- Act Entertainment AG Basel
- GMkonzerte / Odessa Classics