The 'Dear John' trailer uses the song "Set Fire to the Third Bar" as it's non diegetic soundtrack. Immediately when this soundtrack cuts in it provokes an emotional response within the audience and tied in with the shots it emphasises the romance between the two protagonists. This soundtrack is slow but exciting and it ties in with the narrative of the characters being apart. I think the use of this soundtrack is very effective and I would consider using a soundtrack similar to this in my romance trailer.
