Despite a political climate that was unfavorable to modern art (often denounced as "formalist" by the communist authorities), post-war Polish composers enjoyed an unprecedented degree of compositional freedom following the establishment of the Warsaw Autumn festival in 1956.
A pesar do ambiente político contrario á arte moderna (denunciada como «formalista» polas autoridades comunistas), a música polonesa da posguerra gozou dun nivel de liberdade sen precedentes, en especial logo do establecemento do «Festival de Outono de Varsovia» en 1956.