Title: List of Doctor Who composers
Content:  This is a list of composers for science fiction television series Doctor Who. It is sortable by a number of different criteria. The list defaults to ascending alphabetical order the composer's last name.
Title: Doctor Who theme music
Content:  The Doctor Who theme music is a piece of music written by Australian composer Ron Grainer and realised by Delia Derbyshire at the BBC Radiophonic Workshop. Created in 1963, it was one of the first electronic music signature tunes for television. It is used as the theme for the science fiction programme Doctor Who, and has been adapted and covered many times. Although numerous arrangements of the theme have been used on television, the main melody has remained the same. The theme was originally written and arranged in the key of E minor. Most versions of the theme - including the current arrangement by Segun Akinola - have retained the use of the original key, with exceptions being Peter Howell (F# minor) and Keff McCulloch's (A minor) arrangements. Although widely listed in reference works, and many series soundtrack albums, under the title "Doctor Who Theme", its official title is "Doctor Who", although its initial sheet music release used the now-deprecated form "Dr. Who".
Title: Doctor Who
Content:  Tristram Cary, whose Doctor Who credits include The Daleks, Marco Polo, The Daleks' Master Plan, The Gunfighters and The Mutants. Other composers in this early period included Richard Rodney Bennett, Carey Blyton and Geoffrey Burgon. The most frequent musical contributor during the first 15 years was Dudley Simpson, who is also well known for his theme and incidental music for Blake's 7, and for his haunting theme music and score for the original 1970s version of The Tomorrow People. Simpson's first Doctor Who score was Planet of Giants (1964) and he went on to write music for many adventures of the 1960s and 1970s, 
Title: Doctor Who: Series 3 (soundtrack)
Content:  Doctor Who: Series 3 is a soundtrack album that was released on 5 November 2007, containing incidental music that was used throughout the third series of the BBC science fiction television programme Doctor Who. The music was composed by the British musical director Murray Gold and was orchestrated by his collaborator Ben Foster who had previously worked with him on the films Alien Autopsy, I Want Candy and most recently Frank Oz's Death at a Funeral. The album's independent record label is Silva Screen Records who were responsible for the release of previous Doctor Who soundtracks, in collaboration with the BBC Radiophonic Workshop.
Title: Segun Akinola
Content:  Segun Akinola (born 1993) is an English composer for television and documentaries. He took over from Murray Gold as the director and composer of the music for Doctor Who from 2018 onwards.
Title: List of Doctor Who composers
Content: The Edge of Destruction ; The Web Planet - Music by Les Structures Sonores ; The Space Museum ; The Time Meddler ; Galaxy 4 - Music by Les Structures Sonores ; Mission to the Unknown - Music by Trevor Duncan ; The Massacre of St Bartholomew's Eve - Music by Pierre Arvey ; The War Machines ; The Tenth Planet ; The Highlanders  ; The Moonbase ; The Faceless Ones ; The Tomb of the Cybermen ; The Enemy of the World - Music by Béla Bartók ; The Web of Fear ; The Mind Robber - Music by Anton Bruckner ; Inferno Instead of using specially composed music, some serials were scored completely with pre-recorded stock music. Some of these serials used music by one composer as noted below. 
Title: Doctor Who: The Daleks
Content:  Doctor Who: The Daleks is a soundtrack album consisting of the music and sounds from the Doctor Who serial The Daleks (1963–64). The music was composed by Tristram Cary, while the sounds were produced by Brian Hodgson of the BBC Radiophonic Workshop. The soundtrack was released on CD on 15 September 2017 alongside a CD release of the music from the 1989 episode Survival.
Title: Doctor Who
Content:  The Doctor Who theme music was one of the first electronic music signature tunes for television, and after more than a half century remains one of the most easily recognised. The original theme was composed by Ron Grainer and realised by Delia Derbyshire of the BBC Radiophonic Workshop, with assistance from Dick Mills and was released as a single on Decca F 11837 in 1964. The various parts were built up using musique concrète techniques, by creating tape loops of an individually struck piano string and individual test oscillators and filters. The Derbyshire arrangement served, with minor edits, as the theme tune up to the end 
Title: Doctor Who
Content:  most of the stories of the Jon Pertwee/Tom Baker periods, ending with The Horns of Nimon (1979). He also made a cameo appearance in The Talons of Weng-Chiang (as a Music hall conductor). In 1980 starting with the serial The Leisure Hive the task of creating incidental music was assigned to the Radiophonic Workshop. Paddy Kingsland and Peter Howell contributed many scores in this period and other contributors included Roger Limb, Malcolm Clarke and Jonathan Gibbs. The Radiophonic Workshop was dropped after 1986's The Trial of a Time Lord series, and Keff McCulloch took over as the series' main composer until the end 
Title: Murray Gold
Content:  Murray Jonathan Gold (born 28 February 1969) is an English composer for stage, film, and television and a dramatist for both theatre and radio. He is best known as the musical director and composer of the music for Doctor Who from 2005, until he stepped down in 2018 after the tenth series aired in 2017. He has been nominated for five BAFTAs. Born in Portsmouth to a Jewish family, Gold initially pursued drama as a vocation, writing and playing music as a hobby, but switched to music when he became musical director for the University of Cambridge's Footlights society.

Question: Who was the composer of Doctor Who?
Answer: Murray Gold.
Murray Jonathan Gold.