There has always been something magical about a show like the Phantom of the Opera and their recent tweets show us just what is involved in making that magic come to life.

From an Antarctic research base and the Great Pyramids of Egypt to the Empire State Building in New York and the Sears Tower in Chicago, illuminated patches of the globe went dark for Earth Hour, a campaign to highlight the threat of climate change.

Andrew Lloyd Webber’s musical The Phantom of the Opera will become the second-longest-running Broadway musical of all time early tomorrow – a record surpassed only by another of his hits, Cats.