This could very well be the best demo (even tough its not a demo but a concert) for any keyboard/organ/synth/workstation out there...

Enjoy if you haven't seen this yet

http://www.jazzhooves.com/interactive/page33/page33.html

Also have a look at the first two parts of this concert

http://www.jazzhooves.com/interactive/page29/page29.html
http://www.jazzhooves.com/interactive/page32/page32.html

Enjoy...

(((There is also a monthly podcast of great organ/keyboard performances on this website)))