Data
- Obrasso Classic Events GmbH
- Act Entertainment AG Basel
- Brassband Bürgermusik Luzern
- Ensemble Corund
- GMkonzerte
- 21st Century Orchestra
- GC Events Sagl
- Smallflower Events GmbH Elsau
- Good News Productions AG Glattpark
- eco2friendly, c/o Otto Fischer AG
- Obrasso Concerts
- 21st Century Orchestra
- Concert Hall