Who created the Twelve tone technique?

Answer 1

Arnold Schoenberg

Answer 2

The twelve-tone technique, also known as dodecaphony, was created by Austrian composer Arnold Schoenberg in the early 1920s. The technique involves arranging the twelve chromatic notes of the Western music scale in a specific order called a "tone row" and then using that row to create a piece of music. The technique was later developed and expanded upon by Schoenberg's students Alban Berg and Anton Webern, as well as other composers of the Second Viennese School.