Three concerts using the INA.GRM's 80-speaker Acousmonium by performers and composers Norbert Moslang, Yellow Swans, Rhys Chatham, Clément Vercelletto, Raven Chacon, Jan Winderen, Aho Ssan, Julia Giertz, Katarina Gryvul and others. Paris, Maison de la Radio et de la Musique, 13–15 February, various times, €12–€6.