With the Olympic Games quickly approaching, Joytunes is releasing Piano Summer Games this week, which allows players from all over the world to compete via leaderboards on how well they can play their country's national anthem on piano. You can use either a real piano or the touch keys of the program itself. The trailer should shed some light on things.
Looks like some fun if nothing else, and anything that encourages people to learn to play any form of music always gets a thumbs up from me!