Music for my short film

I have been researching some backing music for my short film. The music needs to play either separately  or continuously throughout the entire sequence including the 3 major scenes, opening and closing credit sequences.
I have been looking firmly on Shostakovitch's work especially his fifth symphony, all four movements have interested me, especially the first movement - 'Moderato' and the third 'Largo'









I like these pieces because of their dramatic and harsh tones and I believe that they might add very useful dramatic tones to my film.