"A Frosty Ood"
From Tardis Wiki, the free Doctor Who reference
"A Frosty Ood" was a musical piece composed by Murray Gold.
It was used in Part 1 of The End of Time, as the Tenth Doctor visited the Ood Sphere after being summoned by Ood Sigma. At first, the piece has a whimsical tone as the Tenth Doctor jokes around with Ood Sigma, but gradually becomes more serious as he realises the reason behind the Oods' summoning. It leads into the piece A Dream of Catastrophe.
The piece is featured on Murray Gold's soundtrack Doctor Who: Series 4 - The Specials.
