In music, a later form of the
twelve-tone system of composition, invented by Arnold
Schoenberg, and hinted at in the later works of Max Reger.
It usually refers to post-1950 compositions in which elements of the music were brought under the same type of control as pitch in twelve-tone music. The tone-row (the order in which the composer decides to arrange the 12 notes) can be expressed as numbers (a series) which can then be used to control parameters such as dynamics, rhythm, and attack.
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