Sounds perfectly fine to me. But if you care to elaborate as to what you are hearing? Seems relatively amazing that you can hear nature. I haven't heard of anyone hearing nature but I've heard of people who are able to hear other things like UFOs, angels, demons, and so on. I'm assuming from earlier that I told you that you were evolving as a result of meditation you must have tripped the channeling point fairly early. But now comes to time if this is indeed a result of evolution you must learn to control it cause such things have been known to drive one mad.