Disklavier

I have now heard back from PG Music regarding the capability of their 
software to make MIDI velocity adjustments for volume control.  Their 
reply is "No, unfortunately PowerTracks Pro Audio does not have this 
capability.  You can certainly adjust MIDI note velocities, but not "on 
the fly" while the song is playing."

So that's one less avenue open to us.

Regards,
John Sutton
China