Ooh, finally some music I actually have on my computer!
I'd say shade all the trees minimally, like the one on the right. Or at least AA them a little bit. Also I'd say nay to focal blur, because it would harm the sort of "perpetual forest" vibe I get. The sort of feeling that the forest is the same way, with the same trees, forever. That perpetuality also matches the music, I think.
One thing I don't get is the sparseness of the trees. How is the forest so dark when the trees aren't densely packed? Also it seems like there are more trees in the foreground than in the background, which doesn't make sense if the trees are supposed to be evenly spaced.