Data
- Obrasso Classic Events GmbH
- Act Entertainment AG Basel
- Gadget abc Entertainment Group AG
- Zürcher Kammerorchester
- Reisefibel Leipzig
- GC Events Sagl
- Migros-Kulturprozent-Classics
- Smallflower Events GmbH Elsau
- Good News Productions AG Glattpark
- Rima Entertainment AG
- ENCORE! Entertainment AG
- Act Entertainment AG Basel
- Lucerne Hall