On his newly-established website, Tobias Frei ("ToBeFree") posted his piano/synthesizer performances of some of my songs. Included are, among others, Oldschool reEducated, Prophecy, Forest Dance and the SuperTux Theme. He also posted his own compositions in a similar style which are definitely worth checking out! The page is still under construction so there's more to come in the near future.
The URL is http://musik.freiwuppertal.de. The page is in German, but I'm sure you'll find your way through even if you don't speak it. All songs are licensed CC-by-sa-nc. My favourites among Tobias' own compositions so far are "The Race", "Party", "Driving Fast" and "UnKnown". Right now, if I had the time I'd so oldschool-reeducate them! :-)