Plot: From the Royal Albert Hall, the Bamberg Symphony Orchestra conducted by Jonathan Nott perform Mahler's Fifth Symphony, opening a Thursday night season featuring Orchestras of the World at the BBC Proms. Katie Derham introduces this popular work by Mahler with its intensely lyrical fourth movement, the Adagietto, written as a love letter to the composer's young wife Alma and later made famous when featured in the film Death in Venice