Gniewomir Tomczyk – percussionist, percussionalist, pedagogue. He is collaborating with XXANAXX, Daniel Bloom, Paulina Przybysz, Piotr Schmidt, Tomek Makowiecki, Krzysia Górniak Trio (recording of “Moments” album), Sonar Soul, Serj Tankian (System Of A Down), Simfonia Iuventus and many others. He also performed many times at the Polish Radio and Polish Television and at various major music festivals. Since 2016 he is endorser for Roland company.