“In 2012 the Fondation Louis Vuitton invited me to create a new work for the auditorium of the building designed by Frank Gehry. Starting out with a three-dimensional model, I knew I wanted to create a group of coloured panels of different sizes for the walls around the parterre and the stage. Because it's an auditorium and not a traditional gallery, I had to take into account not just the visual aspects but also acoustic issues. Working with sound engineers and my fabricator, Peter Carlson, I decided that we would make the colour panels from a special fabric that would allow sound to penetrate the surface but would also let me use the exact colours I wanted. Because the public would be moving around the space and walking alongside the walls where the panels would hang, I made them as shallow but as wide as possible. For the high rectangular wall I chose yellow, and for the other walls, blue, green, red and purple. These colours come from a palette that has interested me since I began investigating colours at the beginning of the 1940s, and continue to do today. Having placed the colours on the walls, I also decided to create a piece for the stage curtain. I proposed the only solution which, in my opinion, would be suitable, given the architectural elements of the room and my colour panels, and that was one of my Spectrum works. My first Spectrum dates from 1953, when I was in Paris. In Spectrum I, which is now at the San Francisco Museum of Modern Art, I painted a sequence of colours in regular vertical lines, divided into 13 parts. Spectrum VIII is the most recent variation in this series of linear spectrums, and features just 12 colours."