One of the defining elements of Scott Sporleder’s filmmaking is his use of audio. In addition to whatever cameras he has on a shoot, Spo also carries a pro level Zoom audio recorder, which allows him to capture sounds in the field and then layer these on top of whatever other audio is desired–music, etc.
Notice how much the mood and atmosphere of his video Sitting and Listening to the Outback is created by the first 15 seconds of audio.