Part of a series of short films about unsung heroines. https://www.bbc.com/ideas/videos/ho...these-women/p05tdppj?playlist=unsung-heroines Short film about Daphne Oram and Delia Derbyshire, I thought it was interesting.
Think it's on youtube but there's another video out which further looks at the work of the Radiophonic Workship and Delia Derbyshire is quite prominent in it, She wasn't a fan when they started to bring in the synths (like the EMS mentioned in the video above) which is why she chose to leave.