何か出そうな定番の場所ですからね。自動演奏するグランドピアノや独りでに動き出す人体模型や。

tbd

That's because they're the classic places for 'something' to appear. Like the grand piano that plays by itself, the human anatomical model that moves by itself ...

彼女はグランドピアノでその曲を引いた。

tbd

She played that tune on her grand piano.

私たちは居間の半分の場所を取るグランドピアノを買った。

tbd

We bought a grand piano which took up half of our living room.