Data
- Obrasso Classic Events GmbH
- Act Entertainment AG Basel
- Festival Strings Lucerne
- GMkonzerte
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Smallflower Events GmbH Elsau
- Alegria Konzert GmbH
- Good News Productions AG Glattpark
- GMkonzerte / Odessa Classics
- Festival Strings Lucerne - Daniel Dodds
- Concert Hall