Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Alegria Konzert GmbH
- Good News Productions AG Glattpark
- EJV Abteilung Jodelgesang
- Maya Classics
- Gadget abc Entertainment Group
- ENCORE! Entertainment AG
- Festival Strings Lucerne - Daniel Dodds