Data
- Act Entertainment AG Basel
- Jazz Club Luzern
- Festival Strings Lucerne
- Musikschule Stadt Luzern
- Pro Senectute Kanton Luzern
- domino Event SARL St. Gallen www.dominoevent.ch
- argovia philharmonic
- GC Events Sagl
- Good News Productions AG Glattpark
- Culture Communication GmbH
- Maya Classics
- Pro Senectute Kanton Luzern