Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Lucerne Festival
- Pro Senectute Kanton Luzern
- domino Event SARL St. Gallen www.dominoevent.ch
- argovia philharmonic
- GC Events Sagl
- Alegria Konzert GmbH
- Good News Productions AG Glattpark
- Culture Communication GmbH
- cPAMPLONAcm
- Act Entertainment AG Basel