 As a result, he developed a style described as "strikingly innovative".He composed five symphonies (1926, 1934, 1951, 1956 and 1968), as well as concertos, chamber and choral works.Szabelski was highly influential on the "New Polish School" composers of the early 1950s, and had a formative influence on his student Henryk Mikołaj Górecki.