Pauline Oliveros surrounded by Belgian ensemble Musiques Nouvelles, performing two long pieces for orchestra. "Sound Geometries for Chamber Orchestra, Expanded Instrument System and 5.1 Surround Sound System" by Pauline Oliveros was premiered in Brussels. The 3 sections metaphors of the piece are intended to guide the players in their feelings and approaches to conducted, guided and improvisational music making to create differing atmospheres for each of the three sections. Players sounds are picked up during the performance by microphones, processed in one of ten geometrical patterns by the Oliveros designed Expanded Instrument System (EIS) to transform and move the player's sounds in space in the 5.1 surround sound system. "Meditation for Orchestra" asks the performers to listen then sound. Listen means to include all that is sounding and to find a space for each sound that is made. Pauline Oliveros and Ione are guests of Ensemble Musiques Nouvelle in this studio performance of "Meditation".