- Gini Musikverlag GmbH & Co. KG
- Quint Musikverlag GmbH & Co. KG
- Edition Nosferatu
- Edition Private Area
- Edition Tazagi Music (coming soon)
- Musik & Media Siegi Pleyer
- Schoepe Fette Pennartz Reinke (Rechtsanwälte / Attorneys at Law)
- CCS Copyright Clearing Service GmbH
- copycat-promotion (Sixtus Seelenmeyer, PR-Marketing)
- people4.net GmbH (Stefan Weiss, IT-Hosting / Database-Solutions)
- M. Göstl (Kommunikationsdesign, u.a. Logo für Edition Simon)
- U. Weigert (Steuerberater / Accountant)