Gold's initial arrangement of the "Doctor Who" theme did not include "middle eight" portion originally used in the theme, although he later reinstated it for a rearrangement of the theme introduced in the series' 2005 Christmas episode and subsequently used in the 2006 series of the programme. Gold has created many themes to be associated with various elements of the show, creating two themes for The Doctor ("The Doctor's Theme" and "The Doctor Forever"), Rose Tyler, Martha Jones, Donna Noble, Gallifrey, The Master, Astrid Peth, the Cybermen, and the Daleks.