Comment by eesmith

For those interested in more about Derbyshire, https://hn.algolia.com/?q=Derbyshire has previous entries:

* Delia Derbyshire – Sculptress of Sound [video](https://www.youtube.com/watch?v=W0OGeEgwKNs)

* Delia Derbyshire – The Delian Mode [video](https://www.youtube.com/watch?v=n2dvGQ32q8g)

* How Delia Derbyshire made the Doctor Who theme (1965)(https://www.youtube.com/watch?v=qsRuhCflRyg)

plus links to essays and other text about her.