Data
- Obrasso Classic Events GmbH
- Act Entertainment AG Basel
- City Light Concerts
- GC Events Sagl
- Migros-Kulturprozent-Classics
- swiss classics gmbh / Lucerne Chamber Circle
- Good News Productions AG Glattpark
- EJV Abteilung Jodelgesang
- Gadget abc Entertainment Group
- Konzertbüro Augsburg GmbH
- City Light Concerts
December
2024