Abigail's Song
From Tardis Wiki, the free Doctor Who reference
Abigail's Song was performed by Katherine Jenkins for the Doctor Who episode A Christmas Carol. This song was released on the Doctor Who: Original Television Soundtrack: A Christmas Carol together with the rest of the incidental music composed for this story.
This song is the second song composed for Doctor Who next to The Stowaway that has completely English lyrics.
Several lines of the song are "Silence is all around, Silence is all you'll be and Silence is all you know" which are most likely references to The Silence.