Data
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- City Light Concerts
- Festival Strings Lucerne
- Chor der Nationen Luzern
- Stargarage AG
- argovia philharmonic
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- Accademia Barocca Lucernensis
- Gadget abc Entertainment Group
- AllBlues Konzert AG Winterthur