Benjamin Britten: War Requiem, Opus 66.
The mention of the War Requiem highlights the intellectual and cultural differences between the characters while establishing George's intellectual superiority over Nick. Conducted by Marin Alsop, featuring hundreds of young performers at the Southbank Centre, London

To commemorate 100 years since World War One in Nov 2014, Southbank Centre staged a special performance of Benjamin Britten’s War Requiem featuring hundreds of young performers.
(Information from Southbank Centre)

Ludwig van Beethoven: Symphony No. 7, 2^nd movement. Deutsche Kammerphilharmonie Bremen, directed by Paavo Järvi

Igor Stravinsky: Le sacre du printemps. Radio Filharmonisch Orkest, directed by Jaap van Zweden