About Delia Derbyshire
Delia Ann Derbyshire was an English musician and composer of electronic music. She worked with the BBC Radiophonic Workshop during the 1960s, including an 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. Derbyshire's original arrangement served as the Doctor Who main theme for its first seventeen series, from 1963 to 1980. In November 1960, she joined the BBC as a trainee assistant studio manager and worked on Record Review, a magazine programme where critics reviewed classical music recordings.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.