Lyrics:

It's a cowbell, never ring 513
Or else you will be watched by an unseen entity
It is tall and will stalk you everywhere
Behind you when you're not aware and floats into the air 

remarkable [bad word] cowbell
resides within a soundproofed climate-controlled cell
Recovered but the origins are still unknown
and secured in the heavy containment zone

No marks or engravings but a lot of corrosion
Upon hearing its sound one may get mental degradation
within a steady cube of gelatin its innocent
But now it has been released since the containment breach event 

You’ve seen it. Now he can hear you.
You’ve touched it. Now he can see you.
Never ring it. If you hear it, he can touch you.

It's a cowbell, never ring 513
Or else you will be watched by an unseen entity
It is tall and will stalk you everywhere
Behind you when you're not aware and floats into the air

It's a cowbell, never ring 513
Or else you will be doomed, by an unseen entity
It is tall and will stalk you everywhere
Behind you when you're not aware and floats into the air

oh, o, oh 513
will it ever go away, cause it's so disturbing me.
oh, o, oh 513
whenever you get close, it always will gonna flee.
oh, o, oh 513
The bell has [bad word]  now it won't let me alone.
oh, o, oh 513
There is nothing I can do, and it chills me to the bone.

It's a cowbell, never ring 513
Or else you will be doomed, by an unseen entity
It is tall and will stalk you everywhere
Behind you when you're not aware and floats into the air (x2)