Data
- Act Entertainment AG Basel
- City Light Concerts
- Musikschule Stadt Luzern
- domino Event SARL St. Gallen www.dominoevent.ch
- GC Events Sagl
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- EJV Abteilung Jodelgesang
- Maya Classics
- Furler Productions
- ANDO Music Productions GmbH
- domino Event SARL