This article deals with a creative process born in the intersection of stage, cinema and visual arts: the one of William Kentridge. In the polymorphic work of the South African artist, his movement between different forms of expression holds a key-role in his way of working. Taken between an installation and an exhibition, the progress around his show Refuse The Hour (2012) gives a relevant ground for the analysis of the stakes in a process of creation in movement between various artistic fields. From the studio to rehearsals, and through a rhythm of collective work, this text investigates the genetics of the show crossed by different space-times of creation.