Data
- Obrasso Classic Events GmbH
- AllBlues Konzert AG, Winterthur
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Gadget abc Entertainment Group AG
- Ensemble Corund
- GMkonzerte
- Stargarage AG
- Migros-Kulturprozent-Classics
- Good News Productions AG Glattpark
- Euroconcerts Suisse Sarl
- Act Entertainment AG Basel