This is an old art project I did in 2010 to make music from library circulation data. The Ghent University Book Tower is 20 stories tall + basements total of 24 floors. Each floor contains thousands of books which can be requested by our patrons. I mapped every book request to one note (floor level), and multiple book requests in a time interval to a chord. To find out how this composition would sound like, I was inspired by André Michelle’s famous ToneMatrix.