Data
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Lucerne Festival
- Pro Senectute Kanton Luzern
- argovia philharmonic
- 21st Century Orchestra
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- Culture Communication GmbH
- Maya Classics
- Act Entertainment AG Basel