To get the word out about the Prague Spring Classic
Festival, they created a promo at a shop that allowed customers to create their
own
sheet of music on the checkout line. To do so, they drew a musical staff on
the cash register tape, which had
indicators that detect the location of items scanned. So when the cashier is
ringing up the sale, piano sounds come from the speakers. End result? Your receipt is printed showing you the
musical composition you created.
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