BBC News By Mark Savage image captionDalia Stasevska says she has been "dreaming" of playing to a full house for more than a year It's lunchtime at the Royal Albert Hall and a stagehand is carefully calibrating the auditorium with a two-metre pole. His job, ahead of the first night of the Proms, is to make sure the orchestra's seats are all the correct distance apart. His meticulous measurements might seem comical - but the rules are being strictly enforced, even when the players are in place. "They have this specially-made ruler and they come and they put it between us," says conductor Dalia Stasevska.