I just saw the new "Harry Potter" movie.  In an early scene, Harry
goes to a small shop to purchase his first magic wand and the shop
owner brings out several models for Harry to try.  The wands are
packaged in boxes that curiously resemble piano roll boxes.

We've always known that piano rolls are magic!

Joyce Brite
Player Piano and Mechanical Music Exchange
http://mmd.foxtail.com/Exchange/