El Sistema music programmes have blossomed over the past decade, with the aim of fostering social development through intensive orchestral music instruction. Many scholars agree that creative music making can facilitate student agency development, increase a sense of belonging and promote creative expression by allowing students to bring their perspectives to the learning context. With these benefits apparent, it seems rational that El Sistema should incorporate creative music making into its curriculum. To build understanding of how creative music approaches function in some programmes, I used a multiple qualitative case study to examine eight teachers' perspectives of creative music making within El Sistema and after-school music programmes in Canada and the United Kingdom. Findings revealed that teachers conceptualized creative music making as activities that develop agency through collaborative music creation, that have the benefit of creating a sense of belonging and that give students the opportunity to contribute to their community. Successful nurturing of creative music making seems to rely on connecting students to their wider community, which is achieved in part through incorporating students' own musical tastes. Teachers' experiences with creative music making in their own music education played a crucial role in preparing them to teach creative music.