I really haven't had any problems seeing what's going on, though I do agree that the long grass can be a little too obscuring, especially with regard to smaller critters. The lack of animation on foliage is really noticeable though and I hope that something can be done about it (even a few frames of animation to produce a tiny bit of sway would be enough), but it's not a game-breaker for me. I don't have any problems with the music personally, it may not be as stirring as Die Walküre but it seemed pretty good from what I heard (in fairness I've not spent all that much time in the beta so that opinion may change, though I doubt it will). Then again I never found the BG2 music to be especially inspiring (not in any way bad, it just never jumped out at me) so it may just be down to taste.
