In this paper, we present some problems of two Music Contour Relations Theory operations algorithms: the Refinement of Contour Reduction Algorithm, which was developed by Rob Schultz, and the Equivalence Contour Class Prime Form algorithm, which was developed by Elizabeth Marvin and Paul Laprade. We also propose two alternative algorithms to solve these problems.
Kröger, Pedro; da Silva Sampaio, Marcos (2016) Contour Algorithms Review. In: MusMat: Brazilian Journal of Music and Mathematics, Vol. 1, No. 1, pp. 72-85. Available at http://openmusiclibrary.org/article/813701/.