Brook, quit your babbling!

The first sound that I found worthy of recording was down through a park, a little creek. I walked along until I found a little babbling brook. I thought this sound interesting, not only because it is unusual , but also because it's just quiet enough to drive you crazy. You know you can hear the sound, and you can make it out, but it is right on the threshold of the human ear. Beware, it might just send you to the sanitarium.