The Long Range Acoustic Device (LRAD) is a sound cannon or ‘non-lethal’ sonic weapon that is capable of broadcasting sounds in a straight beam to a precise target over a maximum distance of 1000 meters. The LRAD is frequently deployed by law enforcement around the world, to ‘neutralize’ protesters or in instances of so-called ‘non-kinetic crowd control.’ When used at maximum volume, LRAD is capable of inducing permanent hearing impairment. The same technology is also used to repel birds on private properties. Canon is comprised of a sound performance, an instal- lation, and a series of drawings. Distressed-bird calls with the help of a LRAD unit can be heard throughout the exhibition’s opening hours. The sound travels over a long distance to reach the audience. At the listening position, which takes on the appearance of a park, birdsongs appear to have emerged out of nowhere with no visible source. In music, a ‘canon’ refers to the technique of imitative counterpoint.