Anton Mobin: 18 speakers in Passage Choiseul... Unprocessed field recording captured in Paris on April, 1st, 2010, during the installation of 18 speakers in Le Passage Choiseul, for the opening of the Black Mass Rising ceremony. Along 190 meters, Colin Johnco in the underground gallery (photo) put a speaker in each air vent and Anton Mobin in surface with a crowbar and metal wires fix each speakers.