“Mercury has no atmosphere, so the song it sings is for the sense of touch.
The song is a slow one. Mercury will hold a single note for as long as an Earthling millennium. There are those who think that the song was quick, wild, and brilliant once – Excruciatingly various. Possibly so.
There are creatures in the deep caves of Mercury.
The song their planet sings is important to them, for the creatures are nourished by vibrations. They feed on mechanical energy.
These creatures cling to the singing walls of their caves.
In that way, they eat the song of Mercury.”