Saeed Anvarinejad and his team spent months tracking down the earliest recordings of Iranian music, speeches, interviews, theatrical plays, radio broadcasts, and even the hum of daily life from over a hundred years ago to the present day. In a century-old building in central Tehran, visitors to the "SoundScape" exhibition can listen to these recordings - some serving as reminders of monumental changes that shaped the country's history. "The era of early sound recording in Iran is a very important time in the socio-political history of the country.. the Constitutional Revolution was taking place in Iran, a new order was taking shape in the Iranian mind," explains Anvarinejad. IMAGES AND SOUNDBITES