The first day recording

It's like a extend ear, more than ten times sensitive than my ear. I could hear finger rubbing the surface. People talk in the library sounds shouting. The first day, we just test how the sound track goes, from studio to the library, ASB bank and come back.
When we walked down to most street, the sound of engine and people talking mixed up a constant noise. We want to seek special sound that we've never notice before.