This installation was conceived in response to 
the architecture of the Marciano Art Foundation, which occupies a converted Masonic temple in
 Los Angeles. By inserting coloured gels into the building’s exposed girders and projecting light through these from powerful spotlights moving parallel to them, Eliasson transformed the vast exhibition space – formerly a Masonic theatre – into an experimental set-up that generated an immersive abstract film. The immense shadows of the girders and the fields of solid colour slowly glided over
 a screen covering one of the space’s large walls, with the colours sliding over each other to produce additional hues. Eliasson also created an ambient soundscape to accompany the artwork; he recorded the sounds of a piano brought into his studio as he experimented on it with found objects, and then invited the musician and sound artist Jónsi to mix and arrange the material.