Abstract
Everyone agrees that musical works are individuated by essential elements such as tone, harmony, and rhythm. Some argue that timbre or instrumentation can individuate musical works, too. I argue here that there can be a further element of musical works: spatial location. Some works of music are partly constituted by the location and motion of their sound sources. I begin by describing works of spatial music and arguing that they exist. I then consider the implications for the ontology of music. Hardcore formalists cannot allow for spatial music. I argue that two other views, which allow a close relationship between sounds and musical works, can allow for works of spatial music. However, their ability to do so turns on issues in the philosophy of sound. I appeal to work in philosophy of sound to show that music is an art not just of hearing, but of sounds.