Daphne Oram

" ... Oram was one of the first British composers to produce electronic sound, a pioneer of what became "musique concrete" – music made with sounds recorded on tape, the ancestor of today's electronic music. Her story makes for fascinating reading. She was born in 1925 when Britain was between two world wars. She was extremely bright, and studied music and electronics – unusual at the time not only because electronics was an exciting new industry, but also because it was a man's world. ..."
Daphne Oram: Portrait of an electronic music pioneer, article in Guardian by Robert Worby. (via Up-Tight)
boomp3.com
boomp3.com
Both tracks taken from the 2007 compilation Daphne Oram - Oramics.

Note: More info about Oram can be found at her Wikipedia-entry and at this lengthy article.