The video work “White Wall Tehran” results from a trip to Iran in January 2007. On the streets in Tehran I was stopped by the Iranian revolution guards, because I had been filming them with my videocamera. They erased 27 seconds of my video by filming the white inner wall of their headquarters. The re-recording only is producing the white imagery, that is showing nothing, but at the same time is consisting of various sound fragments: a radio transceiver, somebody stirring his coffee, music playing.