I've found a lot of fake videos of these sounds on youtube. Many of those are re-recordings of the original Kiev video. I know the phenomena is real but these fake ones contaminate the whole thing because anyone who is skeptical to begin with will use these hoax videos as proof that it's all fake. I'm so tired of these assholes doing this as well as faking ufo videos and all other kinds of unexplainable phenomena because it's all the skeptics need to throw the baby out with the bathwater. Anyone that's been proven to have created phoney videos should be permanately banned from ever uploading to youtube again.