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
- Migros-Kulturprozent-Classics
- swiss classics gmbh / Lucerne Chamber Circle
- Smallflower Events GmbH Elsau
- Jazz Club Luzern und AllBlues Konzert AG Winterthur
- Festival Strings Lucerne - Daniel Dodds