The Five Doctors, made and transmitted as a 90-minute special in 1983, was the 20th anniversary outing for the good Doctor, seeing the incumbent Peter Davison joined by previous incarnations Richard Hurndall (standing in for the deceased William Hartnell), Patrick Troughton, Jon Pertwee and Tom Baker. The latter declined to return in person so soon after he had left, so was represented by some footage from lost story Shada. The music was composed by Peter Howell at the BBC Radiophonic Workshop. It was, in accordance with normal practice at the time, mixed in mono, so is presented here within a subtle mono-compatible stereo image. The sound effects for the story were by Dick Mills, but Peter was anxious to include the Death Zone atmosphere as part of the score so - with Dick still working on a previous project for a while - created that effect himself. The story would later be edited into the standard 4 x 25m episode format for syndication, for which Peter provided some additional cliff hanger cues. In 1995, producer Paul Vanezis was contracted by BBC Video to produce a Special Edition of the story, extended beyond the original length (as determined by the transmission slot) and featuring updated visual effects. It was also decided to mix it in Dolby Surround (later updated to full 5.1 surround for DVD) so Peter Howell was called in to rework the music. Both versions of the score are presented complete on this release.