Felix Pfeifer studied computer science and musicology in Potsdam and Berlin, Germany. He is currently preparing for the degree. He played piano in various jazz ensembles in Berlin and also composed electronic music for theater plays and electronic art performances. During his studies he taught two seminars at Humboldt University at the chair of media theory mostly about the real time musical programming language puredata. His interest in interfaces is a result of the work with puredata and other computer music applications/ languages which often lack good interfaces. Developing hardware interfaces which he uses in performances and installations is becoming one of his main focuses.