"Serial music" is a term that describes a compositional technique used in the 20th century. The technique involves composing music based on a predetermined set of pitches or rhythms called a series. Synonyms for this term may include "tone serialism" or "serialism." Additionally, the technique may be referred to as "atonal music," as it lacks a traditional tonal center. "12-tone music" or "dodecaphonic music" may also be used, as the series typically consists of twelve distinct pitches. Regardless of the specific terminology used, the technique is known for its mathematical precision and intellectual approach to composition.