It starts with a baton and ends with a bang. The Last Night of the Proms is where one of the world"s biggest classical festivals signs off in style. For eight weeks, the BBC Proms fills London"s Royal Albert Hall, pictured here, with world-class orchestras and soloists. But the final night? That"s the one everyone talks about. It"s part concert, part singalong, part flag-waving party.