Politics of Feminist New Materialisms at Music Playschools: Musicking in the Middle examines how feminist new materialist politics unfold within diverse music playschool practices in Finland. Drawing on ethnographic fieldwork across five distinct groups – including sessions for babies, asylum seekers, deaf and hard-of-hearing children, and children with disabilities – the book explores how affirmative politics intersect with restrictive forces of power. By analysing the simultaneity of limiting and empowering forces of power, it situates feminist new materialisms within ongoing conversations about intersectionalities, their dynamic transformations and mutual impact of human and more-than-human elements in the formation of differences. The study discusses the concepts of the middle and middling as methodological and political tools by attuning to human languages, movement, silence, vibrations, and rhythms within musical encounters. Politics of Feminist New Materialisms at Music Playschools: Musicking in the Middle is of interest for scholars and students in feminist theory, gender studies, new materialisms, (ethno)musicology, ethnographic methods, childhood studies, and early music education.