Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Feldmusik Luzern
- Pro Senectute Kanton Luzern
- argovia philharmonic
- GC Events Sagl
- Migros-Kulturprozent-Classics
- Alegria Konzert GmbH
- Rima Entertainment AG
- Lorenz Hauser Management
- Gadget abc Entertainment Group
- ArteCultura
- Act Entertainment AG Basel