Source code available at: https://github.com/phochste/LibraryMusic This is a small project I did in 2010 to create music from library statistics using the Processing language. In this demo I transform one day of library circulation data. Every requested call number is mapped to a library floor level. We use Ghent Univerity Library as a model: it has 20 floors. Each floor is a note on the pentatonic scale. When lending requests happen in less then 15 minutes, then this will be chord. See also: http://phochste.github.io/LibraryMusic/ (Java required)