And there'd be that sound in the signal -- it's like  -- and he thought, "Oh, what if I could control that sound and turn it into an instrument, because there are pitches in it."
無線信号のキュキュキュって音を聞いて 「あの音をコントロールできたら 音の高低を利用して 楽器が作れるのでは？」と思ったんです