Data
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- CLAMUS Lucerne
- WMC Media GmbH
- Maya Classics
- Luzern Live
- Festival Strings Lucerne - Daniel Dodds
- AllBlues Konzert AG Winterthur