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This paper describes the state of art of real-time singing voice synthesis and presents its concept, applications and technical aspects. A technological mapping and a literature review are made in order to indicate the latest developments in this area. We made a brief comparative analysis among the selected works. Finally, we have discussed challenges and future research problems.doi:10.22456/2175-2745.107292 fatcat:k7oyvskylvf4nb5taxyhhcclo4