The work completed for this thesis starts with my initial interest in spatial music and concludes by placing space at the forefront of compositional thought. A shift in focus is attempted – from the traditional composer to the aural architect, a composer creating musical spaces within which sound is used to explore, reveal and illuminate those spaces. At the same time an unusual approach to what musical space is or could be is also outlined, along with a strong interest in unveiling virtual spaces, selected for their interesting aural identities. The portfolio contains a number of compositions created as a result of this research, as well as a preliminary set of tools based on the graphical programming language for music Max