How do you move an orchestra?
Tonight sees the first performance of this year's BBC Proms, and a total of 50 orchestras will be playing at the Royal Albert Hall over the next 59 days.
But what is involved in moving an entire orchestra from rehearsal space to performance venue - and how is it possible to make sure nothing is damaged in the process?
The BBC followed the BBC Symphony Orchestra as its instruments were transported to the Royal Albert Hall ready for the opening concert - the biggest to stage, with 1,000 performers.
David Sillito spoke to Stage Manager Rupert Casey, Principal Harpist Sioned Williams and Double Bassist Beverley Jones.