Singing Stone
It rings out with a pure tone when struck.
Overview
The Singing Stone is a piece of furniture that is obtained only by donating 21 minerals to the Museum. Once placed, it plays musical notes when interacted with.
It can be removed after placement by holding left-click, or by using a tool. If the original is lost, a replacement can be bought from the Lost Items Shop in the Secret Woods.
Official description
It rings out with a pure tone when struck.