I think "natural sounds" means music from the sky, which is very beautiful. In other words, it is the notes from nature, the rhyme! It makes people feel intoxicated when listening to it. I feel~~~~For example, our family Stefanie’s lt; started to understand gt; it is called Tian Lai Mi Yin~ If you don’t believe it, go and listen to it! See if it is Tian Lai Mi Yin!