This article presents the concept of the experimental musicology laboratory through the development of several technologies (iAnalysis, EAnalysis, MotusLabTool). The aim is to consider musicological research as the result of an experimental empirical approach which combines methods (musicological methods and digital algorithms), tools (theoretical tools, technologies and software) and sources (traces or phonographic works) all in the same process. As an illustration of this musicological approach, we present three types of highly efficient visualization examples based on the superposition of several transparent colored representations and on the combination of several representations to facilitate the musicological interpretation of the data.