Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- GMkonzerte
- Pro Senectute Kanton Luzern
- argovia philharmonic
- GC Events Sagl
- Migros-Kulturprozent-Classics
- Good News Productions AG Glattpark
- Culture Communication GmbH
- MyNina Spettacoli sagl
- KKL Family
- Pro Senectute Kanton Luzern