I just listened to this for the first time a couple of days ago...and it blew my mind. It was recorded using a technology called Holophonics (3D sound). If you've never heard it before, I highly recommend it.
You will NEED a pair of HEADPHONES for this to work...any headphones will do, but I recommend using a quality set if you have them. Earbuds work perfectly. If you're using the foam headphones, you can press them against you're ears if you'd like, but it's up to you.
So, turn up the volume a bit, sit back, CLOSE YOUR EYES, and enjoy. And, no this is not a prank.
WARNING: If you are currently on any psychedelics, you may not want to listen right now. ;^)Virtual Barbershop
After you've listened, you can check out how it's recorded here
if you're interested. It's actually pretty simple and is similar in concept to how 3D cameras work.