Music is created, enjoyed and understood through the understanding, recognition, and celebration of the difference between components. The project identifies the importance of establishing a building such as the NZSOM, to be one of both private and public functions. This gives rise to the second principle of the proposed design. Steel and timber are the two structural materials used for the SOM. Timber is used as the main gravity and seismic resisting loads, and steel is utilised as a techtonic separator in these elements. In this way interesting, dynamic structural expressions are seen. These expressions help to recognised and celebrate the difference between the components of the buildings structure, much as is done in music theory.