Message to "Fat Segal" Concerning Music

I sent this email to ask if we were allowed to use a piece of music which was copyrighted to this artist. 

After considering to use this music when then decided against it and sought after other music, we looked through a few sites to see if there was any music we could sample and then proceed to compose our own music from it. After looking for a while we found an instrumental piece titled "someone like you" and then edited this to fit perfectly in with our film. Also we had to use GarageBand to create our own piece of music that went along with our film, Adam took the lead role in this due to his excising skills with this software. We decided that we would make the music around our film rather than trying to create a piece and then putting it in the film afterwards. It was better for us to compose the music over the film so that we could make every change exactly where we felt was necessary for the sound to vary in volume. It was decided that we should start the film as a quiet and almost depressed piece of music and then as the story evolves we used slightly more upbeat music and then finished on a faster and louder upbeat mood. Our final music can be heard on our final film which helps appreciate how it goes with the footage.