Today's New York Times has an interesting article in its Arts
section.  It describes in general terms some research going on
to have a computer "listen" to an audio recording of a solo
piano performance and create a simulation of that artist's
performance as played on a Disklavier piano.

See (after registering with the NY Times website):

http://www.nytimes.com/2005/06/05/arts/music/05midg.html?ex=1118548800&en=6005e286157f2007&ei= 5070&emc=eta1

Regards,
Terry Smythe
http://members.shaw.ca/smythe/rebirth.htm