Tetris improvisation (Korobeiniki) on grand piano!

A friend of mine, who is studying music, gave me a room on his university with a grand piano (Steinway & Sons) for a short while. I think I've managed to make some interesting improvisations, the first one being an improvisation about the well known tetris theme (atleast for computer geeks ;)
 
Some other new stuff will follow the next week. Stay tuned!