Tommy can sure play! I think it would be possible to get pretty close to what he is doing (assuming the player has the skills) with just a CVP series Clavinova (88 keys) and carefully set up registrations.
A little off this topic, Mike, but are you interested in the Roland BK-9?
You have mentioned, many times, the need for a lightweight 76-note arranger, that didn't cost a lot of money, and the BK-9 looks to be in that ballpark.
Have you tried one yet, and would it be something that would meet your needs?
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.