The notion of musical similarity is particularly complex because there are numerous dimensions of similarity. If similarity takes place between different fragments from one musical piece, a musical similarity implies a repetition of the first occurring fragment. As well, eventually, the similarity does not occur by direct repetition, but by presenting in two (or more) set of relations, some common values or patterns. Objective musical similarity can be based on musical features such as:
Nevertheless, similarity can be based also on less objective features such as musical genre, personal history, social context (e.g. music from the 1960s), and a priori knowledge.
- Greg Aloupis, Thomas Fevens, Stefan Langerman, Tomomi Matsui, Antonio Mesa, Yurai Nunez, and David Rappaport, and Godfried T. Toussaint, "Algorithms for computing geometric measures of melodic similarity," Computer Music Journal, Vol. 30, No. 3, Fall 2006, pp. 67–76.
- Godfried T. Toussaint, "A comparison of rhythmic dissimilarity measures," FORMA, Vol. 21, No. 2, 2006, pp. 129–149.
- François Pachet, Geert Westermann, Damien Laigre, Musical Data Mining for Electronic Music Distribution. Proceedings of the 1st WedelMusic Conference, pp. 101-106, Firenze, Italy, 2001.
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