"Is the Twelve-Tone Technique on the Decline?" The Musical Quarterly 39, no. 4 (October): 513–527. Philippot, Michel. 1964. "Ansermet's Phenomenological Metamorphoses." Translated by Edward Messinger. Perspectives of New Music 2, no. 2 (Spring–Summer): 129–140. Originally published as "Métamorphoses Phénoménologiques." Critique. Revue Générale des Publications Françaises et Etrangères, no. 186 (November 1962). Radano, Ronald M. 1993. New Musical Figurations: Anthony Braxton's Cultural Critique Chicago: University of Chicago Press. Stegemann, Benedikt. 2013. Theory of Tonality. Theoretical Studies. Wilhelmshaven: Noetzel. . External links An Introduction to Atonal Music Analysis by Robert T. Kelly. Atonality, Information, and the Politics of Perception by Lee Humphries 19th century in music 20th century in music 21st century in music Post-tonal music theory