Alexandre EstrelaAquário, 2010
Video projection, Plexiglass screen, paper, colour, stereo sound
Music: Alvin Lucier, Barbecue Grill
52.5x93x50 cmA rubber band floats adrift in an aquarium. The movement of this odd geometric body is accompanied by the sound of pure frequencies, punctuated with occasional piano notes. The electronic sound establishes a sonic illusion which results from the superimposition of two frequencies with contradictory movements - an ascending and descending frequency (Shepherd's paradox). To each note played correspods the appearance of a video frame which intersects the flow of images, visibly interfering with the rubber band's geometric contour. When a high note is played, a posterior frame of the same video momentarily appears on screen, breaking the image flow; conversely, a previous frame is introduced whenever a low note is heard. As the video progresses, the rubber band wanders through the screen, carrying along the drawing or the mark of past and future momets. The video is absorbed by a sheet of paper inserted in an acrylic structure, which reflects, divides and again projects the images in the neighbouring walls.