To the tune of 'Macavity' from Andrew Lloyd Webber's "Cats":

Delenn: 

The Shadows are an ancient race
They're evil to the core
They're not the kind of people
Who you'd want to live next door
They're slimy and they're creepy
Mysterious and queer,
And when you want to question them
The Shadows aren't here! 

They make their home at Z'Ha'dum
The planet near the rim
Mr. Morden is their contact here,
But we don't dare question him!
They stay holed up and sleeping
When they're wakened, we must fear
And when the next great war begins
The Shadws are coming here!
They'll attack us with their warships,
They'll attack us without care,
And I tell you once, and once again, John, we must prepare! 

Kosh: 

   tweet* *flash* *bleep* Yes. 

Sheridan: 

Delenn, you raise a real good point
But one thing, I don't get.
This Morden guy's the sleaziest
That I have ever met!
He's hiding things about my wife,
He's got real kooky hair,
So, why can't I just punch him out
And just wing it from there? 

Delenn: 

Oh, John, you must please understand
The fix that we are in.
If we do not let Morden go
We might as well give in!
He never is alone, you see,
And always he takes care;
Watch the shadows in his room
They move when you aren't there! 

He's owtwardly respectable, he helps Londo cheat at cards
He's supposed to be dead, you know, so the computers were caught off guard.
And when he doesn't come in and report what he has found,
If he is held in custody, who knows what will come round!
And if you must go find the source, of this alien kind,
Remember John, that- 

Kosh: 

- If you go to Z'Ha'dum, you'll die! 

John: 

It's Shadows this, and Shadows that!
I don't know what to think
The world is going straight to hell,
So let's go have a drink!
I'll release this Morden guy, okay,
And help you fight your war,
But this is more confusing than
What happened to Babylon Four!