Serialism is a method of composition in music that uses a series of values to manipulate different musical elements. This technique often involves organizing pitches, rhythms, dynamics, and other parameters into a predetermined sequence, or "series." The most well-known form of serialism is twelve-tone technique, developed by composer Arnold Schoenberg, which ensures that all twelve notes of the chromatic scale are treated equally, avoiding traditional tonal hierarchies. In serialism, composers create music by systematically varying the series, allowing for complex and innovative structures. This approach emerged in the early 20th century and influenced many composers, including Anton Webern and Alban Berg. Serialism represents a significant shift in musical thinking, moving away from conventional harmony and melody to explore new sound possibilities.