LEGO music machine

It is the same principle as a scanner. It reads cards made of Lego Blocks and plays that kind of music. The picopicopie of electronic sound is good atmosphere.

The following is the movie.
Lego_machine_ music
http://www.youtube.com/v/hYwdyu48bbI

For detailed explanation at the following site.

Upperdowner: Weblog
http://jroller.com/page/upperdowner

Anyway, you can do a lot of Lego mindstorm, depending on your ingenuity.