 Howard Blake recalls : " I went to a viewing and saw that the film was very profound , with a serious anti @-@ war theme , but a certain amount of ' found ' choral music had already been laid in by the editors ... I explained that I loved the film and I thought the choral / orchestral music worked brilliantly but it was very big and rich and I felt a score would have to emerge from it and be very pure and expressive and quite small — and that I could only hear this in my head as done by strings only . " Blake decided to compose his score to match the key of the Schubert Mass , in order for the music to continue seamlessly . However , during the recording session with his orchestra , the Sinfonia of London , he found that the Schubert piece was running slow and therefore flat , and he had to ask the players to tune flat to match his intended key . 
