Great movement.
I really like the pace throughout. It's got a really fluid movement to it, which maintains itself pretty easily through the whole piece.
While I'm listening to it I'm vaguely wondering as to whether this would be playable live with just one person, given the many simultaneous lines to it. As you say it sounds more authentic live, I'd be interested to hear a live version of this, just to see how different it would sound.
But anyway: I like the chord changes, especially the ones around the 0:15 mark.
When I first hear the sounds at 0:21 I thought they were a little weird, but it ended up fitting very well shortly afterwards.
While understanding this is a loop, I think this easily could be expanded into a bit more of a fuller song. It gets a little repetitive at parts and the ending seems a little abrupt, but I think in all it's a nice, solid piece.
NegativeNine 
