Orff-Schulwerk has become a foundational element of U.S. music education. Often positioned as an open, exploratory, and approachable form of music teaching and learning, it is associated with developing musicianship and, importantly, creativity. This article, drawing from a curriculum studies approach, considers the epistemologies, histories, and entanglements that produce Orff-Schulwerk and position it in this way. To do so, the article reviews an archive of method books, writing from Orff-Schulwerk pedagogues, and instrument designs. It then places these artifacts alongside the intellectual foundations through that, in part, their modes of thought and action are constructed. In the process, this article traces how Orff-Schulwerk has been produced and given a particular sensibility through modes of thought largely outside of music such as cognitive science and German body culture. As a result, Orff-Schulwerk and the object of twenty-first century music curriculum become visible as not simply direct translations of creative, musical exploration into curriculum. Rather, Orff-Schulwerk is a distinct ontological object produced through ideas and desires that often have less to do with music and more to do with governing people in modernity. In doing so, the article seeks to question and develop understandings surrounding the foundations of classroom practice and research.