Marek Choloniewski, Composer, sound artist, performer and teacher. Head of Electroacoustic Music Studios at the Academy of Music in Krakow. Founder and President of Muzyka Centrum Art Society and Polish Society for Electroacoustic Music. Since 2008 Secretary and since 2011 President of International Confederation of Electroacoustic Music. Director of Audio Art Festival in Krakow. Founder of many groups and ensembles, among others Freight Train, ch&k&k, dizzy kinetics. He received Honorable Award of the Polish Composers Union, Award of the Ministry of Culture and National Heritage, as well as the Independent Project grant of the CEC ArtsLink in New York. dark&lightZone (1999/2003) gestural control photocells determine sound structures composed live in various forms. dark&lightZone is an instrument and the name of series of performances, including original performance of Arditti Quartett (1999), Stanislaw Wisniewski Compagne (1999), as well as different perfor- mances by chamber ensembles, and sound installations.“ Marek Choloniewski