For the World Exhibition 1958 in Brussel, aka Expo 58 the Dutch pavillion was designed by Gerrit Rietveld and presented a broad choice of his colorful design furniture. Also the organisation had given the Cobra artists room to present their work besides the water bassin. Karel Appel had created a large mural and Constant his Construction in Yellow and White.
Electronic company Philips asked architect Le Corbusier to design their presentation, which became know as Poème Électronique with music by Edgard Varèse, pioneer in electronic music. Read more here: Andere Tijden & Expo 58 on Wikipedia (Eng)