英語「instrumental」の意味・読み方・表現 | Weblio英和辞書 名詞 instrumental (plural instrumentals) (grammar) The instrumental case (music) A composition written or performed without lyrics or singing, using a lead instrument to replace vocals
英語「instrumentation」の意味・使い方・読み方 | Weblio英和辞書 名詞 instrumentation (countable and uncountable, plural instrumentations) The act of using or adapting as an instrument; a series or combination of instruments