"Player Piano Rolls", a video from the TV series "How It's Made",
is at  http://www.youtube.com/watch?v=uL9NudhhSQE
 

"The Acme School of Stuff" visits QRS Music's piano roll manufacturing
facility in Buffalo at  http://www.youtube.com/watch?v=i3FTaGwfXPM
 

Bill Chapman
La Quinta, Calif.