Well, just to be clear in case anyone is interested (I don't want to sound like a sales rep!), the D-S isn't an electronic piano, it's a retrofit (like changing the stereo Toyota supplied with your Yaris, and replacing it with an after-market one). A technician removes the keys from a real, acoustic piano, and puts in new smaller set of keys, so that a player who could only stretch a seventh before, say, can now reach an octave.
It's a pretty neat engineering feat, actually. If anybody's interested, there's a good article in Medical Problems of Performing Artists, vol. 15, no. 3, Sept. 2000; also see
www.steinbuhler.com or chrisdonison.com.
