Greetings,  The foot pumped Duo-Art is the same as the full Duo-Art
except that there is no Theme regulator: the Theme expression codes
are ignored.  The Theme suction level is determined by the foot
pressure applied, while the Accompaniment level is automatically set
by the expression regulator when in Duo-Art mode.

Playing a Themodist roll requires that the Accompaniment also be set
by the pianolist, as there are no expression codes on a Themodist roll.
The Accompaniment hand control is used to control the level.

Best regards,
Spencer Chase
67550 Bell Springs Rd., Garberville, CA 95542 (Postal service only)
tel.: 1-707-984-8356
http://www.spencerserolls.com/