Delia Derbyshire is best known for her work with the BBC Radiophonic Workshop and her help in creating the Dr.Who theme. Delia's music is highly aesthetically mature and while many other Radiophonic musicians of her time were happy to create mathematically structured enharmonic noise she looked for the ghost in the machine, creating haunting, off kilter and often sexually charged music.
This (above) is doing strange and beautiful things to me.