LONDON, ENGLAND - MAY 14:  Camilla, Duchess of Cornwall, Patron St John's Smith Square, attends their 300th Anniversary Gala at St John's Smith Square on May 14, 2014 in London, England. The Gala concert included performances by soprano Rebecca Evans, counter tenor Christopher Ainslie, baritone Simon Keenlyside and organist David Titterington accompanied by the Early Opera Company directed by Christian Curnyn.  (Photo by Chris Jackson-WPA Pool/Getty Images)