This chapter examines how minority-led heavy music subcultures can function as third spaces of sovereignty, which Bruyneel (2007) defines as the resistive social formations that emerge when Indigenous Peoples demand their rights while challenging colonial power. This chapter positions the art and social practice of M.I.S. as an exemplar of how Indigeneity and subcultural sociality can coalesce in ways that catalyze new and collective struggles for sovereignty and liberation. It critically examines these implications to offer several provocations for educators interested and invested in educational justice.