Data
- AllBlues Konzert AG, Winterthur
- Luzerner Sinfonieorchester
- Act Entertainment AG Basel
- City Light Concerts
- Festival Strings Lucerne
- argovia philharmonic
- GC Events Sagl
- Migros-Kulturprozent-Classics
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- Act Entertainment AG Basel