Tesaurus d'Art i Arquitectura Getty Institute 0000-00-00 2024-01-24 15:40:44 en natural300219527 Generally, having a basis in the normal constitution and operation of things as found in nature unaffected or minimally affected by humans. Specifically with reference to aerophones, having no valves, keys, or other mechanical means of altering the pitch produced by the instrument. natural natural 2026-03-30 20:19:55