It comes with the territory - the more elaborate the stage show, the more likely it is that something will go wrong. It was a simple fact illustrated during a recent Beyonce gig, when the singer's hair became tangled in one of the fans placed at the front of the stage. And no, we're not talking about a particularly obsessed member of the audience.

Some would simply have given up until the situation was rectified. But Mrs. Carter, in a successful attempt to maintain her dignity in a wholly undignified situation, just kept on singing.

Camera phones might be a major annoyance at most gigs, but at least they serve to document happenings such as this one: