Composer and performer of contemporary music. Was born in Krakow - Poland, but emigrated as a teenager, and afterwards lived in, among others Gothenburg - Sweden, Amsterdam - Netherlands, Berlin - Germany, Paris - France, Los Angeles - USA and Tokyo - Japan. He studied music and composition for many different teachers and composers in Poland, Sweden, France and Netherlands. From today's perspective he considers that the only teacher who taught him something real was Iannis Xenakis. Karkowski has presented his work in more than 30 countries on nearly all continents.