On this page you can register your Johannus or Monarke organ. Make sure you have the serial number of your organ.
Johannus on twitter
@JohannusOrgans:12 Nov. 2021
MEET OUR NEW OPUS SERIES – The 2-manual Opus 277 provides you with a stoplist of 36 stops, while the stoplist of th… https://t.co/LqeEHfEP3O