Data
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- Gadget abc Entertainment Group AG
- Pro Senectute Kanton Luzern
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- CLAMUS Lucerne
- Smallflower Events GmbH Elsau
- eco2friendly, c/o Otto Fischer AG
- Gadget abc Entertainment Group
- GMkonzerte / Odessa Classics
- GMkonzerte / Odessa Classics