Atonal music is a type of modern music that lacks a clear tonal center. In describing music that is atonal, there are many synonyms that can be used including music that is non-tonal, lacking a tonal center, or music that is dissonant. Other words that can be used to describe atonal music include chaotic, experimental, asymmetrical, unpredictable, and unconventional. Atonal music often features complex harmonies and rhythms, without using traditional chord progressions. Some of the famous composers who are known for writing atonal music include Arnold Schoenberg, Anton Webern, and Alban Berg. Despite being considered unconventional, atonal music has a dedicated following and continues to evolve and inspire new compositions.