7 cirkler by hc gilje
light installation by hc gilje with music composed by Else Marie Pade in 1959. Gilje was asked to create a work based on Pade´s composition 7 cirkler for “The unheard avantgarde”, part of the big sound art exhibition at ZKM in 2012.
Equipped with a radio, an antenna, and home-made software, the artist sweeps the titular spectrum of radio frequencies. Every tenth of a second, the device takes a snapshot of its readings – a measure of electromagnetic activity on a specific frequency. This information is then paired with images of Montréal, digitally altered by these same measurements, to create a “documentary in sound” of the city’s spaces.