Hey Jody I was just using this as I was sleeping and was in a deep sleep state after being up all night. I was perfectly fine and even having higher awareness of my dreams, which were normal for once! I was conscious of the sounds emitted from my headphones which was fine until I heard the most awful sound in my ears, like a screeching/skipping/nails on a chalkboard BLASTED through the headphones and my heart started to skip faster and fell out of rhythm and my body seized up and I caught no breath. The dream I was having visually came apart at the seems like someone ripping paper into shreds also. All in a moment. 

I played it back to try and see why there would be such a sound? Idk if I am tripping or I just can't find the sound but it absolutely petrified me, right up under sleep paralysis levels of fear. Why would that sound be in there? 

Or is my mind playing tricks on me? (I have always had a hard time sleeping and have very frequent nightmares/terrors) my heart is only just now returning to normal and I am left wondering if this is for me.

Edit: I should add that I believe I was in one full cycle as I slept for a half hour and the time was 8am and now it is 9:07 as I type this. I also am experiencing an ache in the front of my head, like the frontal lobe of brain. I really wanted this to work for me. Idk if I can try it again unless I know what purpose that sound served.
Good stuff! :)

I made a little error in my post above, I recommended the "gentle" sleep track but you're obviously already using it!

Instead, I'll suggest starting with my "power nap" tracks until your brain gets more accustomed to hearing binaural beats and recognizes them as friends (instead of, perhaps, threats). :) https://youtu.be/r_nOgNmhgc4
Holly J