Data
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- DaCapo Musikmarketing GmbH
- Festival Strings Lucerne
- Stargarage AG
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- Rima Entertainment AG
- ENCORE! Entertainment AG
- GMkonzerte / Odessa Classics
- DaCapo Musikmarketing GmbH