It's amazing what a few hundred dollars will buy. This is a Yamaha YPG-625, but this is the same sound used even on their 76 note version. Of course this guy's playing is excellent.
http://www.youtube.com/watch?v=F5wjKbQ8G0c&eurl=http%3A%2F%2Fvideo%2Egoogle%2Ecom%2Fvideosearch%3Fsourceid%3Dnavclient%26rlz%3D1T4SKPB%5FenUS252US252%26q%3Dsoundies%26um%3D1%26ie%3 DUTF%2D8%26sa%3DN%26hl%3Den%26tab%3Dwv&feature=player_embedded