Music has been a source of political debate since the the Islamic Republic of Iran was established. All kinds of pop music has been banned over the years. In January of this year several musicians were jailed and arrested, according to a story in The Guardian, for "collaborating with LA-based musicians and satellite channels." But music has also played an important role in the election campaign. In this week's Global Notes we'll take a look at the intersection between pop and politics in Iran. (Photo: Reuters).