Boleslaw Szabelski
Born: 3rd December 1896, Poland
Died: 27th August 1979, Katowice, Poland
Nationality: Polish
Bolesław Szabelski was a Polish composer of modern classical music. While his style shifted and varied over the course of his life, he is best known for his atonal work composed during the 1950s and 1960s.
Szabelski studied at Polish Musical Society School with Łysakowski in 1915. He attended the Warsaw Conservatory under Karol Szymanowski. Between 1929 and 1939, he taught organ and composition at the conservatoire of Katowice.
Szabelski began working in the neoclassical and romanticism modes typical of the early 20th century.
Read more at https://en.wikipedia.org/wiki/Bolesław_Szabelski