Data
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Zürcher Kammerorchester
- GMkonzerte
- Stargarage AG
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- Gadget abc Entertainment Group
- CH Regionalmedien AG
- Lucerne Chamber Circle