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Sujet: un piano commandé par carton

Hello!  We are amateur organ builders in France.
See a video about the piano on
http://www.dailymotion.com/user/GPTO1/video/x8pu8m_piano-pneum-a-carton_music 
and all videos of GPTO on  http://www.dailymotion.com/gpto1/1 

Philippe Cichon
philippe.cichon@gmail.com.geentroep [delete ".geentroep" to reply]

 [ See also http://gpto2.blog4ever.com/blog/index-91095.html
 [ and http://gpto.blog4ever.com/blog/index-59717.html  -- Robbie