I recently came across a fine introduction to the music of Pauline Oliveros.
I interviewed her during the Unyazi music festival in Johannesburg, 2005, and asked what it was that led her to her approach. “The Vietnam war was a catalyst,” she replied. Assassinations, draft resistance and a student immolating himself on the campus where she had just begun working led her to question the value of her activities as a composer. She began an inward process of listening to (single) tones which led her to begin writing her Sonic Meditations – pieces that “helped create openings for people to think creatively.”