Before synthesizers were commercially available, Delia Derbyshire built the Doctor Who theme by hand at the BBC Radiophonic Workshop. She cut, spliced, and manipulated tape loops of individual sine tones and white noise, note by note. The process took weeks. Ron Grainer wrote the score, but when he heard what Derbyshire had done with it, he asked if she could receive a co-composer credit. The BBC said no. She was a technical assistant. That piece of music introduced electronic sound to millions