Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Brassband Bürgermusik Luzern
- domino Event SARL St. Gallen www.dominoevent.ch
- argovia philharmonic
- GC Events Sagl
- Migros-Kulturprozent-Classics
- Alegria Konzert GmbH
- Good News Productions AG Glattpark
- Good News Productions AG
- Brassband Bürgermusik Luzern