>>16288495It ain't a fairy tale. Basicly there's book about guy having them frequently enough to wrote down his experiences, then he started experimenting with various frequencies which are called now "binaural beats" and here's work of a member of CIA on that. Scientifically, or from religious-like POV, quite interesting how that trend for YT music "for learning, healing, whatever" very started from this guy and being curious enough to gain the intelligency agency's attention.
