My grandmother once told me that my grandfather would never ever have harmed a fly. She described him as sensitive, very joyful and passionate for “modern music”. So I always wondered how he could live through the times when he was working as a radio operator during World War II. After some time as a war-prisoner he came back home to my grandmother. Then due to a post-traumatic war syndrome he lost his capability to hear over night. This was at his age of 35. I still remember his warm rough whisper-voice when he was reading stories to me as a child. This was much later, in the eighties, while I spent some of my childhood days at my grandparent’s home. Now I have almost reached my grandfather’s age before he entered the “silent” part of his life. I don’t know if science say's that that flies can hear. At least they seem to be reactive to forced vibrations. The ones in the video I found them in a huge exhibition hall after the night of the finissage. They were all clinging to a window, seemingly trying to get somewhere else. And I found myself and my hands filming. And I became conscious about what I do.