Striking a Chord

Was craving for some piano playing of my favourite pieces and I chanced upon this Youtube video:

http://www.youtube.com/watch?v=_3S7WxZbqjU&feature=related

I was awestruck when I heard the piece from this video....Brought me back to the time of almost about 5 years when I heard this when I had always heard the piece being played in person by a close friend...

Why amazing? Because, to the listener (or in this case, me) the style in which a person plays a piano piece is unique to the individual like DNA or thumbprint is to an individual. 2 people can play the same piece according to the same score, but the way each individual presents will still be different because music is about personal expression...

But yet, from the looks, it definitely isn't the same pair of hands that's playing the piece...

The uncanny resemblance of the personal flair just made me awestruck....Is it just a case of emulation of style? Or coincidence...?