Douglas Henderson said:

> Thus, the pool of Duo-Art owners is _growing_ all the time, albeit
> in small steps.  The "Themodist/intensity" design makes it
> applicable for today's more demanding piano solos, something
> the 'slide up/down' divided scales have troubles with, such as
> the Ampico or Welte-Mignon.

If I may say so, I suspect this does the Ampico less than proper
credit.  It may not have two suction levels running at once but its
lightweight valve system makes it far faster than the Duo-Art at
jumping between one level of intensity and another.  If you examine
an Ampico roll closely you will see that it emphasizes theme notes in
just the same way as the Duo-Art, without the makers having used the
same explanatory language.  This is obvious from listening to one
anyway !

The Duo-Art has greater sway in Europe almost entirely because of the
multinational nature of the Aeolian Co. between 1899 and 1932, which has
resulted in a preponderance of its products in Europe over those of the
American Piano Co.

Dan Wilson, London