Aleatoricism (/ˌeɪ̯liəˈtɔrəsɪzm̩, -ˈtɒr-, ˌæli-/ ey-lee-uh-TAWR-uh-siz-uhm, -TOR-, al-ee) or aleatorism, the noun associated with the adjectival aleatory and aleatoric is a term popularised by the musical composer Pierre Boulez, but also Witold Lutosławski and Franco Evangelisti, for compositions resulting from "actions made by chance", with its etymology deriving from alea, Latin word for "dice". It now applies more broadly to art created as a result of such a chance-determined process. The term was first used "in the context of electro-acoustics and information theory" to describe "a course of sound events that is determined in its framework and flexible in detail", by Belgian-German physicist, acoustician, and information theorist Werner Meyer-Eppler. In practical application, in compos