Tuesday’s concert at the Wrocław Opera confirmed that the stereotype of fixation of a piece of electronic music on a medium is false. Artists associated with the famous Parisian INA/GRM electronic music studio presented their visions of classic works of electronic music written for acousmonium – an orchestra of speakers. The sound producers , such as orchestra conductors, creating a real-time presentation of the following pieces: an almost ambient great work of François Bayle, the composition entitled Mobile composed by classic of Polish electronic music Eugeniusz Rudnik and the work by Bernard Parmegiani.