It's been such a long time since I met you back on Skaro
And I'm pretty sure that you know
That not much has changed since then
It doesn't matter how hard you try to remove me
I think you will agree
That if one of us dies, then the other will too
I am locked in war with you

Exterminate, Regenerate
I thought you always knew our fate
To just keep fighting on and on
While time keeps turning
Regenerate, Exterminate
And even though we are the same
Why don't you hop into your ship
And leave me burning

Even though, as men, we have our contrasts
We're of exactly the same class
And our constant companion is death
Look at you, fashioning people into weapons
How can you say that you're better than me?
We both carry the fire, that is set to devour life

Exterminate, Regenerate
I thought you always knew our fate
To just keep fighting on and on
While time keeps turning
Regenerate, Exterminate
And even though we are the same
Why don't you hop into your ship
And leave me burning

(Doctor)

We both carry the fire, that has the power to end life
But I do with that flame is what separates our types
If it takes till the end of reality to beat you
Then ill be sure to meet you, at the exit of the world

Exterminate, Regenerate
You know that it isn't too late
To end what seems impossible
And leave time turning
Regenerate, Exterminate
And even though we aren't the same
Why don't you hop into my ship
And we can settle this, forever
We can travel time, together
Yeah we can settle this, forever