Data
- Act Entertainment AG Basel
- Festival Strings Lucerne
- Lucerne Festival
- Pro Senectute Kanton Luzern
- domino Event SARL St. Gallen www.dominoevent.ch
- GC Events Sagl
- Good News Productions AG Glattpark
- MyNina Spettacoli sagl
- Luzerner Kantorei Luzern
- GMkonzerte / Odessa Classics
- Festival Strings Lucerne - Daniel Dodds