Garageband... Yep, Garageband. =P ME TOO!!!
I noticed the preset loop you had in there. It was from Garageband. I use Garageband and create Ambient music. But come on man... try not to use pre-set loops just because it lacks creativity. Well, this song was pretty well written except for repetition. I give you a 8/10 and a 4. Keep it up!
and here is the best piece I have created using Garageband. =P
http://www.newgrounds.com/audio/liste n/110320
Hope you like it. Oh and I used the pad you used near 3 minutes.