Audience at Slum Sessions #11 Audience listening to Willem Velthoven for tips and tricks Delen Facebook Twitter LinkedIn Pinterest Email This picture was taken at Mediamatic Fabriek during Slum Sessions #11, part of Freezing Favela. Met: Jans Possel, Willem Velthoven, Iren Winterkorn, Deniz, Els Engel Waar is dit gemaakt? Mediamatic Fabriek, Slum Sessions #11