In 010807 MMD Julian Dyer wrote about the pedal-electric Duo-Art in UK:

> These instruments cannot play Duo-Art rolls by foot -- the entire
> 'Theme' side of the expression system is cut out except when the
> electric pump operates.  They were designed expressly to play
> Themodist rolls by foot and Duo-Arts electrically.

This is true for my British pedal-electric Duo-Art housed in an upright
1920 German Steinway.

My American made Style 37 pedal-electric Duo-Art in a Steck upright,
No. 96193, is signed by "Ashley Driver - Transposer, Fitter and Tuber"
and dated 12.10.27.

This model goes that step further, where you can pedal Duo-Art rolls
by foot with the accompaniment side of the expression box operating.
(The style 37 is identified by the extra accordion on accompaniment.)
Thus you have pedal Pianola, pedal Duo-Art and electric Duo-Art in one
piano.

The Style 37 is very rare in Australia, only 4 known to collectors,
so I wonder how extensive sales were in the States or in other
countries for that matter?  Could the Aeolian Style 37 be the most
interactive roll playing instrument ever made?

Ian McDonald