aleatoric

/ˌeɪliəˈtɔrɪk/
adjective
  1. Involving or depending on chance, luck, or randomness, especially in art or music.
    • The game's aleatoric elements, like rolling dice, made each playthrough different.
    • The composer used aleatoric techniques, letting the performers choose the order of the musical phrases.
    • Her aleatoric painting style involved throwing paint at the canvas to create random patterns.
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