The world's biggest classical music party gets under way live at the Royal Albert Hall. Katie Derham presents alongside a host of special guests, with performances from conductor Elim Chan, soprano Louise Alder and star trumpeter Alison Balsom, who is playing for the final time after an illustrious career. Highlights include Dukas's mischievous Sorcerer’s Apprentice, Hummel's Trumpet Concerto and Mussorgsky’s exciting A Night on the Bare Mountain.