Hello group,  Nicholas [Simons] has a good point of course but then
again, these old machines are here for amusement and half the fun is
gone if the keys don't move.  One might as well have a tape recorder
play.

I own a Duo-Art grand piano, made in England.  It plays perfectly well
but the keys don't move.  Everyone who sees it in action, asks why that
is and if there is something wrong with it perhaps, and where does the
sound come from if the keys aren't pressed, etc.

In addition to that, I, as a pianist, like to see what exactly is
playing so I can observe, learn or even play along.

Original is great, but if the moving keys attract those children and
they one day start collecting or buying one of these machines, then,
by all means, make them keys move!

Kind regards,
Bernt Damm
Sydney