For the purposes of the Subject Index all 术语 创作 by the French theorist 皮埃尔 舍费尔 in his phenomenologically inspired researches into the 经验 感知 and 格物/分类法 of 声波 樂/乐 技术 and 作曲 of 樂/乐 實/具体 can be 已有 under this 伞状 术语

All 术语 currently featured in the Glossary and Subject Index can be 已有 in Schaeffer's seminal text Traité des objets musicaux Éditions du Seuil 1966