Music led by complexly mathematical processes (and processing,as in rgraphic notation), or, as Cage may have supposedly called it: Determinacy, ra form of calculated spontaneity. These are stoic synapses wired by the rcommon architecture of sound, made by select fews architect of sound, rdirected at a select fews' acquired taste.
"Stochastic music is method of composition in 20th century classical music
developed by Iannis Xenakis and described in his book Formalized Music. This music
arose from Xenakis' critique of Serialism, which in Xenakis' point of view just
substituted the natural causality of tonal music by the stricter abstract causality in
order to create atonal music. However, Xenakis concludes, this causality can't be
perceived and what the listener hears is just a random set of tones, which causes
that Serialism crushes under its complexity."
Metastasis, Pithoprakta, Eonta
"Xenakis meant to create music that would evade bindings of causality but would
remain logical, and its inherent logic would be perceivable on the macroscopic level.
This often ends up in a slowly evolving mass of sound. "Stochastic" is term
borrowed from theory of probability and Xenakis describes it as "an asymptotic
evolution towards a stable state, towards a kind of goal, of stochos". Stochastic
music is kind of guided indeterminism, where the following state is only partially
determined by the preceding state, that means the concrete state n+2 follows
after the state n+1 only with some probability. Every aspect of music, be it pitch,
timbre, dynamics and so on can be subordinated to such laws of chance."