Not a major spoiler या anything! The लेखन is in Japanese but the graphic view is HD and it's very clear and everything and so I watch it from time to time:)
This guy playing it is AWESOME!!! Listen to it all the way through and you'll see how he adds to it and changes it but still keeps it KH-like, it's really cool! ^_^
One of the पियानो संगीत specials from the Kingdom Hearts: पियानो Collection CD!:D This one is one of my fav's and I listen to it a lot whenever I'm writing:)