This is Delia Darbyshire. If you've ever watched Dr. Who, you've heard her music--though she wasn't originally credited. What you might not know is that she, and other women at the BBC in the 1960s, were pioneers of early electronic music.

Delia didn't compose the melody to the Dr. Who theme, but she arranged it for electronic "instruments"--at that time a motley assortment of screeching machines not designed for making music. She translated staid sheet music into an otherworldly sound, & making it iconic, ethereal

For comparison: Here's what it sounds like played on a traditional instrument-piano: https://t.co/GBTchDHjKH

Here's what it sounded like when she got done with it: https://t.co/JMGPZdigeD

If you'd like to learn more about Delia Derbyshire, check out this documentary about her and the historical context in which she created her arresting sounds--the period when tv really began to come into its own as a medium:

If you're hungry for more, here's a longer audio documentary all about her life and work--Delia Derbyshire, Sculptress of Sound: