Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- GMkonzerte
- domino Event SARL St. Gallen www.dominoevent.ch
- GC Events Sagl
- Good News Productions AG Glattpark
- Feldmusik Hochdorf
- Rima Entertainment AG
- Lorenz Hauser Management
- GMkonzerte / Odessa Classics
- Rima Entertainment