Brilliant Atmosphere
The note choice, phrasing, sound of the instruments, the wave effects...It really does all add up to a brilliant song...that would fit absolutely perfectly into some kind of creepy/dark beach video...not that I've seen many of those.
This is probably the best thing I've heard on Newgrounds in my short time here, I'll definetly check out your other stuff :).
May I ask what program you used to compose this?
Absolutely a 10/10, it's got a brilliant atmosphere, and I really like it =).