harmony--things sounding at the same time
Would you use that term to include non-pitched sounds occurring at the same time as well (or a combination of both)? Combinations of timbres (whether in an acoustic setting, e.g. through orchestration, or in electroacoustic works) seem very fundamental to music, especially in recent times; I wonder if there might be a better 'fundamental' term than harmony (which as I understand it privileges pitched sounds), which can encompass harmony itself and other types of sonic combination?
Could one not speak of juxtaposition? It doesn't maybe have all the right connotations though, emphasizing the elements as much as their relation (or the quality of the relationship between various of their qualities). 'Combination' seems a little too vague. Tenney's 'clang' doesn't quite fit the bill here, as it can apply to contiguously as well as simultaneously combined elements.