Rattman

Rocking back and forth in the tubes,

He chants to the rhythm of his echo.

Imitating the one external sound he has,

To have at least something to interact with.

So long he heard only the ringing in his ears,

That it started to whisper into his brain.

So he spends every last bit of energy he has,

Day after day breaking the silence he fears.

https://www.youtube.com/watch?v=gKUCPoQOAC4