Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Ensemble Corund
- Pro Senectute Kanton Luzern
- GC Events Sagl
- Good News Productions AG Glattpark
- Rima Entertainment AG
- Furler Productions
- ENCORE! Entertainment AG
- GMkonzerte / Odessa Classics
- Konzertbüro Augsburg GmbH
- Festival Strings Lucerne - Daniel Dodds