The men in the audience clapped and the women ululated as the band finished singing: it would have been commonplace except the venue was in Iran and the group on stage were all women.
The catchy rhythmic music they played that balmy night is known as "bandari", according to AFP.
Its lyrics are from ancient folkloric songs, passed down the generations and familiar to many at the concert in an amphitheatre in the southern port of Bandar Abbas.
Dressed in traditional clothing, the band was taking part in a state-organised festival to showcase "Persian Gulf music" and, as well as singing, also played their instruments.
