In the second half of the Last Night of the Proms from the Royal Albert Hall Katie Derham introduces the revelries live as the world's greatest music festival reaches its grand finale.In this Olympic year, the second half begins with American composer Michael Torke's Javelin which was originally performed at the opening ceremony of the 1996 Atlanta Olympics.A hand-picked selection of young singers perform Vaughan Williams' 1938 tribute to Henry Wood's 50th anniversary - Serenade to Music.The cross-genre British composer Anne Dudley contributes a special arrangement entitled ¡Fiesta Caribeña! And star tenor Juan Diego Florez returns to perform more spine-tingling Donizetti.We take a trip around the UK in a celebration of Henry Wood's Fantasia on British Sea Songs with contributions from the Proms in the Park in Colwyn Bay, Glasgow Green and Belfast.And the 2016 Proms season comes to an end with the climax of Rule Britannia, Land of Hope and Glory and Jerusalem. The BBC Symphony Orchestra and Chorus and the BBC Singers are conducted by Sakari Oramo.