The presentation of the complete legacy of the composer Juan José Mantecón, both because of its idiosyncrasy, which is unique and not transferable, and by virtue of its membership to that category called music personal archives, address action lines which deepen the normalization problems of each of the elements involved in the inherent music personal archive information. It starts from the current context of this type of archives, very valuable as cultural heritage and of great historic interest, although very little studied until now, and many of them still hidden to researchers, and archivists knowledge. On the other hand, they are archives with very heterogeneous collections and that often have problems of dispersion and fragmentation of information. The current situation derived from the empirical analysis of accessibility concerning other personal archives which have music as conceptual background, has taken us to understand the necessity of proposing a method of application in documentary treatment in order to provide solutions to the whole knowledge of the figure under study and, therefore, to extrapolate such knowledge to the sociocultural framework the figure belong to. The methodology, otherwise, serves to value this kind of archives, with a special focus on scores and musical works treatment, as well as with a particular emphasis on the design of a systematized relationships model between the different collections in a music personal archive. The system allows a documentary treatment not only considering the documents like isolated entities but as information of multidirectional content.