Once in a while a photographer takes a picture, and when he looks at that picture, he notices the presence of some ghostly figure. Someone who wasn’t in the room at all when the photo was taken. That’s what I had to think of, watching the Belgian contemporary music ensemble Ictus perform Morton Feldman‘s Piano And String Quartet (Kaaitheater, Brussels). On stage with them: Rosas veteran Fumiyo Ikeda. Was it that peculiar piece of music, or her dancing? It seemed as if she was there while not being there at all.