Track 21 from the "Doctor Who Original Television Soundtrack Series Four". This cue plays during Donna Noble's final moments in the parallel universe of "Turn Left", and during key moments in "The Stolen Earth" and "Journey's End" of Doctor Who Series Four. It finally accompanies Donna's heartbreaking fate aboard the TARDIS in one of "Journey's End"'s final scenes.
The track's Western flavour is inspired by Ennio Morricone. It was played during the Doctor Who Prom in 2008.