Hands up who knew about Iranian rock music? Bahman Ghobadi's drama centres upon a pair of musicians (Negar Shaghaghi and Ashkan Koshanejad) who, like others in modern Tehran, are willing to risk the wrath of Islam – and jail – in order to play.
Theirs is literally an underground music, performed in basement rooms soundproofed for fear of the police. Negar and Ashkan hope to get a band together for their secret gigs, while their charismatic friend and promoter Nader (Hamed Behdad) is trying to organise passports and an escape route to London. The music itself, performed live, is an exhilarating blend of East and West, and strong enough to shoulder the burden of a desultory narrative. "Rock the Casbah" will never sound quite the same again.