Soundtrack for my Opening Sequence

For my opening sequence I am not using any script or voiceover but instead I am using a soundtrack and sound effect for my piece. I decided to use a soundtrack as I wanted my piece to get more dramatic as the I got further into the piece. I want to make sure that the soundtrack would fit in with the idea of my opening sequence. I will choose sounds that will be quite dark and deep and fairly dominating, which I hope will work effectively with my footage and will emphasise the character being followed and her emotions. I think the soundtrack is a really important factor of my sequence, that I want to get correct so that it will work when put together with my footage.