This article explores the possibility of conceiving preschool music activities as a way of forming spaces of participation with society's youngest. The discussion draws on Hannah Arendt's ([1958] 1998) definition of public spheres, and the argumentation is closely linked to an empirical example from musicking events with 1-3 year olds in a non-typical, arts-focused Swedish preschool. In their promotion of equality and plurality in this preschool, the children and the music pedagogues co-construct a public sphere by using a multitude of "languages" and challenge both the hegemonic position of verbal language and other age power structures. In this promotion, other "subjects of music" come into being. Thus, it is argued that society can perceive children as legitimized citizens in the "here and now" and not only in a distant future when they have become fully educated adults. The article challenges current preschool music education and demonstrates alternative social constructions.