Twice
Once in 1990 when the banks took to running the company with their own management team, (Due to the awards that the recently introduced Grand Piano had won they still saw a future)

Then again in 1997/98 due to the lack of R & D in new products

The Wersi name was then bought by the founders of the original Wersi Company, and they took over the development of the Open system keyboard prototype that had been produced by Creamware.

OAS 7 in 2005 saw them also license the Hypersonic 2 sound engine.

Regards

Bill