Atonality in music refers to the absence of functional harmony as a structural principle. In atonal music, there is no central key or tonic, and traditional chords and progressions are avoided. This creates a sense of constant tension and avoids the feeling of resolution typically found in tonal music.
Composers like Arnold Schoenberg, Alban Berg, and Anton Webern are pioneers of atonal music. Their works often feature dissonant harmonies and fragmented melodies, challenging listeners to perceive music in a new way. Atonality is not random; it often follows its own internal logic, such as the principles of twelve-tone technique.
Atonality emerged in the early 20th century, primarily in Europe, as a reaction against the perceived excesses and limitations of late Romanticism. Composers sought new ways to express emotion and explore musical structures beyond the confines of traditional tonality.
Listen to Arnold Schoenberg's "Three Piano Pieces, Op. 11." Try to identify moments where there is no clear sense of a home key or traditional chord progressions. Focus on the interplay of individual notes and the overall texture rather than expecting a familiar melody or harmonic resolution.