The use of artefacts by mathematics teachers in their classroom while teaching practices can play an important role in the quality of teaching. The selection of these artefacts depends on the type of intervention carried out in an educational context and on the mathematical concepts to be worked on. The aim of this study is to understand how artefacts are orchestrated when interventions are made where math is done with music, as well as to understand how these artefacts become epistemic tools for students. Therefore, a case study was developed, with a class of the 7th grade, during an academic year, covering the areas of mathematics: numbers and operations; algebra and functions. The results suggest that it is possible to do mathematics with music, using artefacts orchestrated among themselves. They also suggest that the orchestrated artefacts allow to create a context in which the student's learning is active, where the artefact has the status of an epistemic tool.