The lack of standardized tools for assessment in music therapy is a reality that has concerned music therapists for years. Considering technology as one of the advances that have most modified our lives in recent years, this study carries out a systematic review to analyze the technology available for data collection and assessment in music therapy. The databases analyzed were PubMed and Scopus, from 2013 to June 2023. Out of 370 records, only 8 records met the inclusion criteria, showing a strong prevalence in publications in 2022. This review suggests that the technology is increasingly present in music therapy sessions and it is also growing the number of studies worried to find more accurate solutions for data collection and assessment in music therapy. Taking advantage of technological resources for this process seems to be a great opportunity, but the research in this context is insufficient for this moment, so there remains too much work to do.