Cool Song.

But it doesn't really do anything - this sounds like the sort of stuff I might do when I'm mucking about trying to get the right sound out of my guitar setup.  Is that what you're doing?
Perhaps I'm being a little harsh.... but really it doesn't seem to have much structure, and purely played on a single guitar.  For this to get any kind of decent review (from me) it would have to have other instruments or vocals, and some sort of structure to it.
Sorry, but it's 4 mins and 6 seconds of someone playing about in my opinion

I think he just about covers it. And that annoying undertone really hurts my ears...