Stage anxiety is a common problem in musicians in training, greatly affecting their professional perfor- mance and emotional well-being. In this sense, the use of music therapy has been proposed as an effec- tive non-pharmacological alternative to address these episodes, taking as reference studies previously carried out on the effects of music on the brain and human behaviour. A music therapy intervention proposal was developed for a music student from a multimodal approach that favours the understanding of the patient as an integral being. To carry out this research, the analysis of music therapy recording sheets and participant observation as qualitative indicators was carried out, and the "Stage anxiety test associated with musical performance" was carried out based on the Beck Anxiety Inventory (BAI), which allowed a quantitative analysis of the student's anxiety level, before and after the therapeutic intervention. As a result of this analysis, it was concluded that the multimodal approach in music therapy is effective since it provides tools from musical improvisation, working with songs, and the use of edited music, which allow for managing episodes of performance anxiety.