After his election in 2005, President Mahmoud Ahmadinejad cracked down on music. His ministry of culture and Islamic guidance has refused permission for the distribution of thousands of albums. Since last year's disputed elections the authorities have given even fewer permits for public concerts, fearing they could be used by the opposition.Iran has rarely given permission to concerts, as it fears that the opposition might use it as an opportunity to express itself, said Mohammad Reza Shajarian, Iran's most prolific and popular classical vocalist."They are afraid of my concerts because of those moments before the concert is begun, when the whole hall is in silence and darkness when someone suddenly shouts 'death to dictator' and everybody accompanies and they are unable to identify that person," Shajarian said.