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From Aniboom : An old man shares his life story on the piano with his young grandchild through evocative music.

The song is: "Comptine d'un autre été: l'après midi" composed by: Yann Tiersen, a sortof minimalist (mostly piano) composer like Philip Glass.
Animation by Aidan Gibbons.

<a href="http://www.youtube.com/watch?v=-ZJDNSp1QJA" target="_blank">http://www.youtube.com/watch?v=-ZJDNSp1QJA</a>

Thanks for posting that.  It was a great way to start the weekend.