1. Juslin, P. N., & Västfjäll, D. (2008). Emotional responses to music: The need to consider underlying mechanisms. Behavioral and Brain Sciences, 31(5), 559–575.
2. Kim, Y. E., Schmidt, E. M., Migneco, R., Morton, B. G., Richardson, P., Scott, J., et al. (2010). Music emotion recognition: A state of the art review. In Proceedings of the international conference on music information retrieval (ISMIR) (pp. 255–266), Utrecht.
3. Laurier, C., Meyers, O., Serrà, J., Blech, M., Herrera, P., & Serra, X. (2009). Indexing music by mood: design and integration of an automatic content-based annotator. Multimedia Tools and Applications, 48(1), 161–184.
4. Song, Y., Dixon, S., & Pearce, M. (2012). A survey of music recommendation systems and future perspectives. In Proceedings of the 9th international symposium on computer music modelling and retrieval (CMMR) (pp. 395–410), London.
5. Russell, J. A. (1980). A circumplex model of affect. Journal of Personality and Social Psychology, 39(6), 1161–1178.