I have searched many copyright free websites for our soudtrack. In the website: http://incompetech.com/music/royalty-free/index.html?feels%5B%5D=Aggressive&Search=Search+by+Feel I found two tracks to choose from: Five Armies and The Cannery.
I am thinking of using one of these tracks to download and edit using the Garageband software. This way I can more abient sounds to build tension and suspence.
We have learnt that sound is 50% of the film. It adds and enhances a great amount of emotion, also is one of the main ways to produce emotion within filming.