Greengrassi Gallery’s Davide Minuti (pictured below) and I assembled an 8-track playback system for Kristin Oppenheim’s latest sound work, “where did you sleep last night?”, and installed it in Regent’s Park for the Frieze art fair. This wasn’t easy. The weatherproof box containing the computer and amplifier had to be about 20m from the loudspeakers and we had to bury all the cables. And then there was rain to cope with. But once assembled, the effect of standing in the middle of the eight waterproof loudspeakers is quite magical. You are enveloped by sound. It feels as if you are inside a room, and yet there are no visible walls, and the wind plays across your face.