Chameleon Circuit

At first we were just Gallifreyans and that was fine.
Just taking up space and biding our time
Till Rassilon came along
With his ever present sense of right and wrong
He was strong, he was mighty
He was the founder of Time Lord Society
Now this is the subject that everyone finds the hardest
But you’re gonna have to pass it if you want to earn your TARDIS
Nobody’s graduating from this Academy
Until you’ve all mastered Gallifreyan History
Now Rassilon had a buddy called Omega
His interstellar science would amaze ya
He found our source of power
And devised a cunning plan in under an hour
It went sour, he was erased
But at least now we could travel through time and space
Now if there’s a subject that’s impossible it’s this