1. Hevner, K.: Experimental studies of the elements of expression in music. The American Journal of Psychology 48(2), 246–268 (1936)
2. Thayer, R.E.: The Biopsychology of Mood and Arousal. Oxford Univ. Press, Oxford (1989)
3. All Music, http://www.allmusic.com
4. Wu, T.L., Jeng, S.K.: Regrouping expressive terms for musical qualia. In: WOCMAT. Workshop on Computer Music and Audio Technology, Taiwan (2007), http://www2.ee.ntu.edu.tw/~b0501064/paper/WOCMAT_2007_TerryWu.pdf
5. Meyer, L.: Emotion and meaning in music. University of Chicago Press, Chicago (1956)