Volker Bertelmann is a classically trained composer/pianist from Germany who currently resides in Düsseldorf. Having studied classical piano for ten years, his work as Hauschka is based upon a playful exploration of the possibilities of the 'prepared' piano - a disruptive intervention into the preconceived idea of the piano as a pure-toned instrument: by clamping wedges of leather, felt or rubber between the strings; preparing the hammers with aluminium paper or rough films; placing crown corks on the strings...