CLOUD CEILING is an interactive installation created by Canadian artists Wayne Garrett & Caitlind r.c. Brown (Calgary). Constructed from hand-bent steel, reflective mylar, electronics, motion sensors, LEDs, and 15,000 re-appropriated incandescent light bulbs, the piece is an permanent installation designed specifically for Progress Bar in Chicago. As bar patrons pass beneath the installation, they trip motion sensors within the CLOUD, creating “lightning” beneath the cumulous surface of light bulbs, mapping their progress through the space and the social “electricity” between people.