Prismes électriques – hommage à Sonia Delaunay is a tribute to the naturalized French artist Sonia Delaunay, co-author of the simultaneous contrast theory with her husband. This piece is a personal transposition into music of one of Delaunay’s paintings dated 1914: Prismes électriques. I used some pictures of this painting – mainly enlargements of details – thus obtaining short sound elements through an audio synthesis software which made it possible to create sounds from images with a noise shaping technique. The single fragments of sound were then put together and elaborated, overlapping them several times so as to create a dense sound textures in which the audio spectrum appears first decomposed and then reorganized so as to bring out each element by contrasting it with the next ones: a study within the theory of simultaneous contrast.