In this paper, we will present the stages of the archiving and digitization process legacy of archpriest and composer Velimir Spernjak, which is located in the Archive of the Institute of Musicology, SASA. The heterogeneity of this material is reflected in different types of documents that include printed musical pieces, sheet music, transcripts, photographs, personal documents as well as manuscripts. After the first review of the material and insight into the state of documents, the need for priority digitization was established, for the sake of preserving this heritage and its availability to future interested researchers. In preparation for digitalization, three stages are planned. First stage involved sorting and classifying the material, so that the second stage would then include listing with a detailed description of each document, as well as its signing. Digitization was implemented in the third, or last, stage. Although without most modern equipment, the technical conditions of the Institute of Musicology SASA met the needs of realizing digitization. In this regard, it has been successfully brought to an end, so we have the opportunity to illustrate the results of this endeavor on this occasion.