Wersi is a German manufacturer of electronic organs, keyboards, and pianos. It is named after the communes of Werlau and Simmern in Rhineland-Palatinate. They were used by organists such as Franz Lambert and Klaus Wunderlich. The brand's current range of instruments uses the Open-Architecture-System (OAS), which is a GUI that runs using a Windows XP computer, enabling the keyboard to support third-party programs, such as music notation programs, software synthesizers, and digital audio workstations.

History

Wersi was established in 1969 by two brothers, Wilhelm-Erich Franz and Reinhard Franz, near Rhein-Hunsrück-Kreis, Germany. They built the company's first instruments in the basement of their parents' house. Below is a timeline of the company's development: