Marcin Jurgielewicz – Born in 1997 in Bialystok, startet his music education in Szkoła Muzyczna I st. Im. I. Paderewskiego in Białystok in double bass class under prof. Leszek Sokołowski in age of 10th. He continued learning playing on this instrument and graduated with honors Ogólnokształcąca Szkoła Muzyczna II st. Im. W. Lutosławskiego in Białystok from prof. L. Sokołowski and mgr Krzysztof Sokołowski. Marcin took part in several music courses and workshops in Łańcut, Opole and Kołobrzeg. He also went to double bass competitions in Elbląg, Katowice, Starogard Gdańsku and Dąbrowa Górnicza. He cooperated with Witold Lutosławski Chamber Philarmonic in Łomża and Suwalska Orkiestra Kameralna. Nowadays he is in last year of Master’s degree studies at Stanisław Moniuszko Academy of Music in Gdansk prof. Leszek and Krzysztof Sokołowskis’s double bass class.