Data
- KKL Luzern Management AG
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Radio Pilatus AG *
- argovia philharmonic
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- GMkonzerte / Odessa Classics
- AllBlues Konzert AG Winterthur