Atonement

The best thing about this trailer is the gradual progression from relative sanity, to utter chaos. You see Saoirse Ronan and Kiera Knightly just lounging in the grass, and all of a sudden you’re in the middle of a war. What also aids the trailer is the original score by composer Dario Marianelli, which actually won the Academy Award for Best Original Score.

Music: Atonement (Music from the Motion Picture) - Dario Marianelli (iTunes : Amazon)