Neat piece! I love 7/4 time. However I would like a bit more volume overall. Even big sections are not loud enough to hear as clearly as I'd like over say, room noise with my headphones on. Writing wise, this is a treat. It is not mixed dirty, as many pieces in this genre are. Although it took me a bit to perceive the pitch of the low strings and that they were not drums. This may represent a need to mix differently for those upper frequencies. I'm speaking specifically for the right channel. Although it does sound like you've used brush percussion as well.