How Pink Floyd's Oil-Slide Projections at the UFO Club Invented the Rock Light Show

Before Pink Floyd, a rock concert’s visual element was usually just a few colored bulbs or a spot on the singer. At the UFO Club in London in 1966–67, the band’s early light experiments—oil and dye between glass slides, projected through overhead projectors—changed that forever. They weren’t just lighting the band; they were making the light itself the performance.

The setup was ridiculously low-tech: a couple of Bolex projectors, bowls of water, inks, and a handheld slide system that let the operators (often band members or friends) distort colors in real time. That improvisational, liquid, breathing effect became the visual language of psychedelia—and it set the template for every serious concert light show that followed, from the Fillmore’s liquid-light projectors to modern laser synths. Pink Floyd’s UFO shows proved that light could be a band member, not a decoration.