Although music uses sound as its medium of conveyance, music is not just sound. Although musical structures rely on the acoustics of sound-generating devices (instruments) and conveyances (concert halls, loudspeakers) and on the way the body senses the sound waves generated and transformed by these (psychoacoustics), theories of musical composition can work both with and against these principles. Music is involved in sonic discourse, sonic rhetoric, if you will, and history shows us that because of this it is a sociocultural phenomenon which reflects the times in which it is composed.