The aim of this paper is to highlight the benefits brought about by a learning-through-the-arts project aimed at creating links between the cultural heritage of students from diverse backgrounds and the fundamental aims of school instruction. Guided by a naturalistic research strategy and the principles of teacher action research, the data was collected during the implementation of a training project for preservice teachers at a highly complex school setting. The results provide an interdisciplinary and inclusive methodology for learning through the arts that promotes the development of cognitive and socio-affective competences, which are essential for lifelong learning. The project was carried out in a multicultural primary school, where a disadvantaged social composition prevails as a result of school segregation. Evidence of learning and the schoolchildren's artistic creations provide examples of good inclusive practices that foster collaborative interactions, widen participation, and improve academic achievement in various school subjects. Ideas for future research are also discussed.