Published in the American Journal of Play, But First, Let’s Jam follows a new materialist approach to consider the informal and collaborative creative gathering called jamming as a form of creative play, and makes a case for the jam as a transformative event of genuine intrasubjective dialogue. The article explores Karen Barad’s theory of agential realism and Hans-Georg Gadamer’s ethics of play, arguing that the jam serves as an ethico-socio-political event that supports the communal and creation-centered aspects of our collective existence, offering an opportunity for learning responsibility (or “response-ability,” as Karen Barad calls it) and accountability. It concludes that jamming, like creative play, offers the kind of cooperative underpinnings essential to our relational and ontological makeup.