Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- Pro Senectute Kanton Luzern
- argovia philharmonic
- GC Events Sagl
- Good News Productions AG Glattpark
- Culture Communication GmbH
- Lorenz Hauser Management
- CH Regionalmedien AG
- Konzertbüro Augsburg GmbH
- Act Entertainment AG Basel