Delia Ann Derbyshire was an English musician and composer of electronic music. She carried out notable work with the BBC Radiophonic Workshop during the 1960s, including her electronic arrangement of the theme music to the British science-fiction television series Doctor Who. She has been referred to as "the unsung heroine of British electronic music", having influenced musicians including Aphex Twin, the Chemical Brothers and Paul Hartnoll of Orbital.

The BBC Radiophonic Workshop was one of the sound effects units of the BBC, created in 1958 to produce incidental sounds and new music for radio and, later, television. The unit is known for its experimental and pioneering work in electronic music and music technology, as well as its popular scores for programmes such as Doctor Who and Quatermass and the Pit during the 1950s and 1960s.