The SURPRISE! exhibition at the BPS22 is one of the stages of Jean-François Octave's farewell tour after 33 years at the head of Atelier Images dans le Milieu (IDM) at Arts2 (Ecole Supérieure des Arts, Mons). It includes works by students and artists who studied at the studio, as well as a selection of iPhone paintings, a recent development in the practice of this genre-breaking artist.