“Skyscrapers, an Electric Forest, and Fresh Air in Jars?” Fifty young people from Poland and Germany, together with the Mendelssohn Chamber Orchestra from Leipzig, have prepared an extraordinary, multifaceted PERFORMATIVE SOUND LABORATORY, during which they will present their expedition into the future and the world premiere of their artistic visions. The concert is the result of a year-and-a-half-long project called “geo-sounds.” Its…