(06.11.14) In the late 80’s in West-Berlin Uli M Schueppel has made a radio-show (with Johannes Beck), called „Shlim-Line Show“. In their last broadcasting in October 1989 they „opened the wall 14 days too early“… (acoustically!)
This story is picked up in an interesting article on DIE ZEIT-online by Carolin Ströbele und Maria Exner. With original sound-bits, pics, etc. (Sorry, but again, only in german!)
zeit.de/zeit-magazin-westberlin-radio-100