The fans who are crowded into a basement bar in Shepherd’s Bush, west London, on a chilly Tuesday evening already know the lyrics to the songs, even though none of them have been officially released.
This is not the hottest new British or American band who are hoping to break out of from the underground.
This is Radio Tehran and they are playing a launch gig for their debut album, 88, in London because to do so at home in Iran would almost certainly get them arrested.
The songs were recorded and produced in the Iranian capital, but the band know all too well that it would be impossible to replicate this concert at home.
