Atonalityin its broadest sense describesmusicthat lacks atonal center, orkey. atonalmusic can sound like chaotic, random noise. Although Atonal music can sound very random it takes a great deal of skill to compose a piece of music in the Atonal style. Examples of Atonal music: http://upload.wikimedia.org/wikipedia/en/c/c0/Mystic_chord.ogg This style of music I've heard a lot in TV shows like 'Columbo' when a character is in a panic or is confused