Music in everything.
In order to promote the festival of classical music we perform a promo action in the shop where every customer can compose his own piece of music. We draw a musical staff on the cash register tape. When the cashier is ringing up the sale, some sounds are coming from the speakers forming a piano work composed by the customer instead of the annoying ringing. After passing the checkout lane the customer receives a receipt with the list of purchases and a sheet music of his own composition.
How does it work
The cash register tape has the indicators that detect the location of items in musical staff. After that the notes are organized in the same order as the items on tape forming a piano piece of music.