Data
- Obrasso Classic Events GmbH
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Blasorchester Stadtmusik Luzern
- Lucerne Festival
- domino Event SARL St. Gallen www.dominoevent.ch
- GC Events Sagl
- Good News Productions AG Glattpark
- Gadget abc Entertainment Group
- Konzertbüro Augsburg GmbH
- Obrasso Concerts