Tarkin:

Be Our Guest-
Be our guest
Now it's time to feel depressed
For we stormed aboard your starship
and put you under arrest
There's a nice
Room for free
In block AA-23
Just a shorter term solution
While we wait your execution
You ran off
With the plans
But you fell into my hands
Now I'll push you back and onto Vader's chest!
Because I'm on your case-
where is the Rebel base?
You'll be our guest!
Be our guest!
Be our guest!

Star of Death!
Huge in size!
(though it has just seven TIEs)
When we fire up the gun, a
planetary system dies!
Looks just like
A small moon
You'll see it in action soon
Join us for a celebration
To officiate the station
Lots of guns,
Tractor beams-
The fulfillment of my dreams-
You can tell it has me suitably impressed!
This thing's my master plan
let's blow up Alderaan
So be our guest!
(As you've guessed,
You're too trusting, I suggest)
Be our guest!
Be our guest!
Be our guest!

Vader:

You're our guest!
You're our guest!
Don't be difficult, princess!
Now you're caught, I would have thought
cooperation was the best
You resisted
the droid
Now it's maker's unemployed
For such courage under torture
You could almost be my daughter!
All our problems
are solved
Now the Senate's been dissolved
But we must eradicate the Rebel pests!
So give us information
For interrogation
You're our guest!
You're our guest!
You're our guest! -acapo