Melody Harmonization in Evolutionary Music using Multiobjective Genetic Algorithms

Publication Type:

Conference Paper

Source:

SMC Conference 2011 (2011)

Abstract:

This paper describes a multiobjective approach for melody harmonization in evolutionary music. There are numerous methods and a myriad of results to a process of {harmonization of a given melody.} Some implicit rules can be extracted from musical theory, but some harmonic aspects can only be defined by preferences of a composer. Thus, a multiobjective approach may be useful to allow an evolutionary process to find a set of solutions that represent a trade-off between the rules in different objective functions. In this paper, a multiobjective evolutionary algorithm defines chord changes with differing degrees of simplicity and dissonance. While presenting such an algorithm, we discuss how to embed musical cognizance in Genetic Algorithms in a meta-level.  Experiments were held and compared to human judgment of the results. The findings suggest that it is possible to devise a fitness function which reflects human intentions for harmonies.

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