Dude... I know how you feel. Hearing this live is intense... it gives you shivers.

Ooooo! So scared of your sound effects. Sounds just like some sounds I've got on my keyboard! Flee in terror, the keyboards are ringing the sky. XD

AWESOME ! These sounds are soooo fascinating !

We hear a High pitch noise that drags out for a few seconds and dies off , it happens in the morning and lasts for hours. Inkster, Michigan is where we are located.

I, too, have heard something similar. The kids and I heard what I thought was construction equipment. We drove to the store and could still hear it when we pulled in. Just as loud, so I knew it wasn't construction equipment and there was no road work going on nearby. Needless to say, we were a little spooked. What's worse is no one else seemed to be paying a lick of attention. Just like they never do to the chemtrails. Sigh.

Harmonic overtones from distant lightning (if it's not fake) - it's definitely a real, known phenomenon.

It's the aliens trying to drive us insane with the noises

Woord! Been there, done that! :D Glad to hear I'm not the only one, haha!

my mom had heard that sound too,at 12:00am.she woke hearing this sound...and we live in Costa Rica!

You said a mouthful! Hit the nail on the head!

I just heard this in Denver. I went outside and the sky was clear. It sounded like a tornado siren. It would get louder then quieter like it was far away. Very strange. Very creepy.

Yes. :o It's really creepy, I just talked to my sister and she's witnessed this before, too. And i know what you mean about the planes, too...Either there's some kind of "new angle" that we don't know about of which causes the illusion of plane disappearances, or there's something very strange and wrong going on...either way, there's something very strange and Wrong going on. XD

I had a dream a while back( a month or so) that the sky was making noises.

I don't fear death. It's something that just happens, no avoiding it. I just fear not making a mark on the earth while I'm still here.

That's EXACTLY what I was thinking when I heard this.

You have found the truth. Isn't it strange how some people try to fool all people? Man is a funny animal.