Julien has been programming visuals for more than 15 years on various types of
computers, having grown up with the Atari ST demoscene culture. It introduced him to real-time visual programming and since then he has been kept fascinated by animated graphics that can be gena computer whatever the used tool or language.

Arnaud Castagnés' definition of his music is a "dance music" builts from hip hop samples, deep basslines, cut-up beats and melodic synths.He puts some clicks and other
electric errors too.

The workshop focused on creating a collaborative real-time animation with sound output. Thanks to a prepared Processing sketch, each workshop participant was encouraged to tweak & hack his own version of the program. His coding & actions directly affected a composition shown on a big screen in real-time, with audio input tweaking as well. Participants were not only able to change the software code itself in order to modify the behaviour but also learn to compose with it.