Hanns Holger Rutz is a sound and digital artist, composer, performer, and researcher. He holds a PhD in computer music, observing computer-based compositional processes. In his work, development and research on software and algorithms are crucial. He worked as researcher at the Institute of Electronic Music and Acoustics (IEM) Graz (AT), most recently leading the project Algorithms that Matter, funded by the FWF programme PEEK. He is chairman of Reagenz – Association for Artistic Experiments