Delia Derbyshire turned a composer's rough sketch into one of the most recognizable sounds on Earth, note by note, with tape loops, test equipment, and a pair of scissors. She was credited as an anonymous 'assistant.' Decades later, Aphex Twin and the Chemical Brothers would call her the unsung mother of electronic music — and a cache of lost tapes in a Manchester attic would prove she'd been inventing the future the whole time.
Press play first. This eerie, gliding soundscape opened a million Saturday evenings — and it was assembled entirely from tape, long before anyone could just play a synth.
From a Coventry childhood scored by air-raid sirens to the Radiophonic Workshop: the life of a mathematician-musician once turned away from a job because 'the BBC doesn't employ women in the recording studio.'
Composer Ron Grainer was so stunned by what she did with his score that he asked the BBC to credit her. They refused — every Workshop member was officially just an 'assistant.'
In her own voice, explaining how she coaxed music out of oscillators and noise — the methodical, almost mathematical craft behind the magic.
Watch the actual process: tape machines, splices, and speed changes layered into a composition. Accidental ASMR, and a window into how records were literally built by hand.
A breakdown of her technique — beat-matching tape machines, sampling plucked strings, the legendary 'Wobbulator' — plus BBC tools that let you try making Dalek voices yourself.
The full story, including the 267 tapes found in her attic after her death in 2001 — among them a track that sounds uncannily like dance music made 25 years too early.