Data
- Opera, Operetta
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- Pro Senectute Kanton Luzern
- argovia philharmonic
- GC Events Sagl
- Migros-Kulturprozent-Classics
- Good News Productions AG Glattpark
- Culture Communication GmbH
- Maya Classics
- SJSO
- Lorenz Hauser Management
- ENCORE! Entertainment AG