Wersi (Wikipedia)

Wersi

Wersi is a German maker of electronic home and stage organs and keyboards, founded in 1969 by brothers Wilhelm-Erich and Reinhard Franz in Rhineland-Palatinate. Famous in the 1970s for organs often sold as build-it-yourself kits, Wersi today builds computer-based entertainment organs running its Open Art System (OAS) and successor OAX platform.