I do not own this piece of music. It belongs to Murray Gold and the British Broadcasting Corporation.
I am also not earning any money off this.

11 years ago, the Eleventh Doctor and Clara Oswald, aided by the data ghost of River Song, journeyed to Trenzalore to save Vastra, Jenny, and Strax from the Greater Intelligence, in the episode "The Name of the Doctor".

This track plays as Clara and the Eleventh Doctor face a memory from the Eleventh Doctor's past. It is unreleased, but plays in the DVD menu.