自じ動どう楽がっ器き

noun

self-playing musical instrument

Refers to mechanical instruments that play music automatically, such as music boxes, player pianos, and orchestrions.

• この博はく物ぶつ館かんには19世せい紀きの自じ動どう楽がっ器きが展てん示じされている。

  This museum exhibits 19th-century self-playing musical instruments.