The Polish School (also known as New Polish School) is the music of several post-1945 Polish composers who share generational and stylistic similarities. Representatives include Tadeusz Baird, Henryk Górecki, Wojciech Kilar, Witold Lutosławski, Krzysztof Penderecki, Grażyna Bacewicz, and Kazimierz Serocki.[1] [2] According to Polish music scholar Adrian Thomas, Zygmunt Mycielski used the term at the Łagów conference in 1949, and it was later used at the 1956 Warsaw Autumn festival.[3] Their common purpose was in part retrospective, reacting to socialist realism, and in part speculative. Sound mass and sonorism influenced these post-war composers.[4]