http://www.nupedia.com/article/short/atonality/ [Nupedia] An explanation of atonality written by Christoph Hust. http://www.thinkingapplied.com/tonality_folder/tonality.htm The psychological basis of atonality. http://www.music.utk.edu/theory/nonserial_atonality.html Definition, terms and concepts, and analysis.