Data
- Obrasso Classic Events GmbH
- Act Entertainment AG Basel
- City Light Concerts
- Gadget abc Entertainment Group AG
- Blasorchester Stadtmusik Luzern
- domino Event SARL St. Gallen www.dominoevent.ch
- GC Events Sagl
- Migros-Kulturprozent-Classics
- CLAMUS Lucerne
- Good News Productions AG Glattpark
- Migros-Kulturprozent-Classics