The music box is a miscellaneous furniture item which first made its appearance in Wild World and City Folk.
In New Leaf, Happy Home Designer, and New Horizons, the music box is a shell decorated with gems on its top. The music box will play the K.K. Slider song it was created with.
Obtaining a Music Box[]
Wild World and City Folk[]
It can be obtained after taking Katie back to her mother Kaitlin after getting lost in a different town. Once interacted with, this music box will play the Title Theme for Wild World and City Folk.
New Leaf[]
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.
Only one music box can play at a time: should the player turn on a music box and then another, the previous one will turn off on its own (check Gallery for an example).
Happy Home Designer[]
The clam-shell music box is unlocked when the player first builds the Concert Hall.
New Horizons[]
The music box returns in the 2.0 update as DIY recipe. It acts the same way as it does in New Leaf except that it's combined with a stereo, meaning that it plays whatever songs the player has currently registered.