Data
- benefit concert
- AllBlues Konzert AG, Winterthur
- Luzerner Sinfonieorchester
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- GC Events Sagl
- Migros-Kulturprozent-Classics
- Good News Productions AG Glattpark
- Culture Communication GmbH
- CONCORDIA
- ANDO Music Productions GmbH