LONDON, ENGLAND – MARCH 19: A sign advertising a musical ‘Thriller’ on Shaftesbury Avenue in the West End on March 19, 2012 in London, England. London’s West End is synonymous with theatre productions, containing over forty venues showing plays, musicals and operas, the theatres typically play host to over 14 million spectators viewing over 18,000 performances each year. (Photo by Oli Scarff/Getty Images)