The Music Box can be obtained after taking Katie back to her mother Kaitlin after getting lost in a different town. Katie and Kaitlin only appear in Wild World and City Folk.

In New Leaf, if the player obtains a Giant Clam Shell, along with a K.K. Slider Song, they can take it to Cyrus at Re-Tail, who will turn it into a Music Box for 3,000 Bells.

In Wild World and City Folk

In Wild World and City Folk, the Music Box is a square box which can be placed in the player's house and when interacted with will play the Animal Crossing theme song. The Music Box can only be obtained after the player reunites Katie with Kaitlin.

New Leaf

In New Leaf, the Music Box is a shell with some gems on top. The player can create a Music box by starting a project with Cyrus by giving him a Giant Clam Shell and a K.K. Slider Song. The Music Box will play the song it was created with. In the Welcome Amiibo update, some RVs will include a song for sale for 3 MEOW Coupons .