  In this work, we report on the results and lessons learned from different
disciplines while researching the loosely-defined problem of hearing a city. We
present Xenakis, a tool for the musification of urban data, which is able to
capture some features of a city's topology through the distribution of street
orientations, and turn it into a (very) small piece of music, a loop, which can
be used as building block for compositions. Besides providing complementary
visual and auditory channels to interface with this data, we also allow the
piping of \textit{midi} signals to other applications. This concept was
developed by visualization researchers collaborating with musicians using
design study methodologies in an open-ended way. Our results include musical
tracks, and we take advantage of the scope of alt.VIS to communicate our
research in a sincere, humorous, and engaging format.
