Musicology Annotation << Back Stochastic composition of Xenakis: calculated chance Marina Pereverzeva Stochastic music (from Greek στοχασμός — a guessing) was developed under influence of the scientific theories and philosophical doctrines in the twentieth century music and Iannis Xenakis’ creativity in the first place; it assumes that organization of sound materials is based on method of statistical distribution of elements (sound’s parameters, form’s sections etc.) to some extent. Stochastic method of composition had a solid philosophical foundation which made Xenakis reconsider an artistic experience and suggest a new creative paradigm that was not found in the past music. By his convictions, this compositional technique reflects basic principles of the nature’s development, which composer tried to follow in his music. In addition, he used a stochastic music in searching of a new musical expressiveness and sounding material which would correspond with his perception of the world, artistic, and aesthetic views that are considered in this article. Keywords: stochastics, chance, aleatory, music, mathematics, form. Contacts: E-mail: melissasea@mail.ru Pp. 11-19.