Boulez – Xenakis: Two Converging Musical Heuristics

What is heuristics? The methods of imagination that prepares for invention and discovery, by accepting all arguments are good if they can succeed in achieving the proposed goals. A principle deemed to be heuristic, therefore, when it considered not on basis truth supports but fact contributes wholly or partly realisation some project. In order compose a work, creator has certain number dominant ideas, which function as pivots fixed points around piece develops. value these sometimes take form theories borrowed from physical mathematical sciences, justified posteriori, works emerge them, priori: experimental logical what assert, even confirmed reality, put here brackets. These principles count opinions composer; heuristic creation. aim this paper analyse operate driving force behind creation Boulez Xenakis.