"The Doctor's Theme" is a piece of music composed by Murray Gold for Doctor Who. It served as the main musical motif for the Ninth and Tenth Doctors. It first appeared in the series 1 episode Rose. In series 3, it was somewhat superseded by "The Doctor Forever", but returned in a new arrangement for series 4. The signature notes from "The Doctor's Theme" are heard as part of "Vale Decem" immediately after the Tenth Doctor speaks his final words and begins to regenerate in TV: The End of Time Part 2.