Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- GMkonzerte
- Lucerne Festival
- Pro Senectute Kanton Luzern
- GC Events Sagl
- Good News Productions AG Glattpark
- Culture Communication GmbH
- Euroconcerts Suisse Sarl
- ArteCultura
- Secondhand Orchestra
- Act Entertainment AG Basel