I did this activity in my backyard. I live in a fairly suburban/rural area with a large unbuilt forest land behind my house.
I was stuck by how loud the human world sounds were. An airplane, the cars on the road nearby. It was very distracting. At the same time, I could hear the little bird noises close by as well. As I relaxed into the process, I started to connect more and more to the quiet bird noise. The bird were churuping at each other, checking in.
I realized during this activity that I got more and more still and quiet as it went on. Opening my senses to the natural world was relaxing and grounding.