| Hochschule für Musik | part of the Johannes Gutenberg University, Mainz. |
| Capriccio | record label |
| Delta Music | record label |
| cpo | record label (part of jpc) |
| Artenova | record label (part of Sony/BMG) |
| Wergo | record label (part of Schott Music & Media) |
| Motette | publishing company |
| Radio Orchestra Cologne | current CD releases |
| Mainz City Theatre | Official Website |
| City of Mainz | City of Gutenberg and the Media |
| European Choir Academy | Official Website |
| Johannes Gutenberg University | University of Mainz |
| Doctors Without Borders | Official Website |
| Brainworx Media GmbH | Developers of this website |
