Data
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- Festival Strings Lucerne
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- Feldmusik Hochdorf
- Culture Communication GmbH
- Maya Classics
- Gadget abc Entertainment Group
- ENCORE! Entertainment AG
- Act Entertainment AG Basel