In a twelve-tone composition, there are no key signatures or tonic notes. Instead, all 12 notes of the chromatic scale are used equally. This often results in atonal music, which can be disorienting for listeners accustomed to more traditional harmonic progressions. One of the most important aspects of the twelve-tone technique is its use of "set theory." This theory was developed by Austrian composer and music theorist Anton Webern, and it provides a way to organize and analyze twelve-tone compositions. Set theory is based on the idea that all twelve notes can be grouped into sets of two, three, four, or six pitches called "prime forms." These prime forms can then be combined and permuted to create larger sets, The twelve-tone technique was first developed by Austrian composer Arnold Schoenberg in the early 20th century as a way of composing atonal music. At its core, the twelve-tone technique is a compositional method that uses all 12 notes of the chromatic scale in equal intervals. This gives the music a more abstract sound, as there is no tonal center or key signature.    Visit https://www.twelvetonemusicschool.com/