Deep Listening Publications, 1990. Second edition. Stapled wrps., 42pp. Illustrated. Fifteen pieces some including audience participation (1971-1990). Through her Deep Listening Pieces and earlier Sonic Meditations (1971), Pauline Oliveros helped introduce the concept of incorporating all environmental sounds into musical performance. This requires focused concentration, skilled musicianship. and strong improvisational skills, which are the hallmarks of Oliveros' form.