The Philip Glass Ensemble performing Music in Twelve Parts at the Idea Warehouse in 1975, with vocalist Joan La Barbara (far left). The Museum of Modern Art/SCALA/Art Resource, N.Y. hide caption
Pauline Oliveros Pauline Oliveros artist page: interviews, features and/or performances archived at NPR Music
Pauline Oliveros
Joni Mitchell strums her guitar outside The Revolution club in London in 1968. Central Press/Getty Images hide caption
Oliveros created the music theory known as "deep listening." "I found myself listening to long sounds and becoming more interested in what the sound did themselves than what I would do with them," she says. Vinciane Verguethen/Courtesy of the artist hide caption
Pauline Oliveros performs at Merkin Concert Hall in New York, in 1991. Jack Vartoogian/Getty Images/Getty Images hide caption