If the SD7 is really a midjpro with keyboard and speakers then I would think that this demo will also boost sales of the midjpro.
Such a shame that they can't be found in the music stores as that would be a sale booster too.

I'm still using my old Solton (Ketron) MS40 module and couldn't bear to be without it - Ketron let themselves down by not making more effort to sell their wares which are, and always have been, class leading instruments in many ways.
Tony