She then studied improvised and aleatoric music with John Cage and David Tudor. His technique included the use of polytonality, polyrhythm, tone clusters, aleatoric elements, and quarter tones. Uncertainty quantification intends to work toward reducing epistemic uncertainties to aleatoric uncertainties. In 1969, Wilson discovered the music of aleatoric composer John Cage. He wrote in diverse styles, including Norwegian-Romantic, Gregorian, neo-classical, twelve-tone, aleatoric, and serial. It also displays a partial return to melody after the composer's aleatoric period. Other uses include pieces where an aleatoric or undetermined effect is desired. Aleatoric devices are used similarly, as well. As the worms move, they generate aleatoric music. He used twelve-tone technique, albeit freely, as well as aleatoric technique and collage. Polanski and the band used aleatoric music for these scenes, to communicate chaos. A year later in 1952, Cage applied his aleatoric methods to tape-based composition. One motivating force for its composition was Boulez's desire to explore aleatoric music.