This work refers to the “Dream Machines”, an experimental object invented by the painter and writer Brion Gysin and the scientist Ian Sommerville, and which is composed of a light bulb with light passing through slits in a rotating cylinder. Loris Gréaud revisits the structural mechanism; the light variations, following the frequency shift of the “ Dream Machines”,, which is transcribed here by the undulations of the light produced by the filament lamps. Beyond this technological reference, the artist also quotes stories, legends, rumors about this invention in order to crystallize them in a contemporary technological object.