The Queen and the Duke of Edinburgh are guests at a concert to celebrate the monarch's 80th birthday. Children's choirs, the Scots Guards and the BBC Symphony Orchestra perform A Little Birthday Music by Peter Maxwell Davies , Master of the Queen's music and poet laureate Andrew Motion , exploring themes of constancy and the environment; teenage soloist Julian Bliss performs Mozart's Clarinet Concerto; and the Orchestra's new chief conductor Jiri Belohlavek concludes with Dvorak's New World Symphony. With Alan Titchmarsh.