How does a music score behave in the cloud? As music software moves to the cloud, the integrated interface for editing, engraving, and instantaneous publishing sparks innovative music practices. Artists can now create new works not only using notation and instruments, but also by way of physical gestures, movements, and live coding. The result brings audio, video, lighting, and visual design into a single artistic product. While traditional music making will continue to demand traditional scores, multimodal and multimedia integration will ultimately be reflected in its documentation, which will undoubtedly test our understanding of a “score,” and what roles libraries will play in its collection, preservation, and access.