The Doctor's companions are now all gone
Rose, Martha, Donna, and Amy have went away
Rose was attacked by manikins and ran and ran.
They went to the year 5,000,000 to World War 2.
She fought the Slitheen, and killed the Dalek emperor.
But her time came when she became trapped in another universe.
That was the cost for saving the world.
She was the Doctor's lover
Martha was a nurse who went to the moon.
She was smart and clever even for a nurse
Her hospital even flew to the moon.
She met Shakespeare, and was almost hurled into the sun
She walked around the world for a year and saved the world.
But her time came when her family needed her.
She was the Doctor's support
Donna was funny, witty, and sassy.
She became a wife, a widow, and became unemployed on the same day.
She saved the Ood from slavery, and saved 1,000,000 people from turning into Adipose.
She even met air piranhas that live in shadows.
She saved the world so many times.
She was even the most important person in the whole of creation.
But her time came when all her memory of the Doctor and her adventures were lost.
She was the Doctor's best friend
Amy was a sweet little girl.
She met the Doctor at age 7.
She waited and waited for 16 years for him to come back.
She met statues that move when you are not looking at them
To creatures that you forget about when you look away.
She gave birth to the Doctor's wife.
But like all companions, her time came when she wanted to be with her husband again, so she was transported back in time to live happily with him.
She was the Doctor's family.
These were the companions that come and go.
Now ask me again why there is a blue box
With a man with both is hearts
Torn into two.