5 days late...
Yep. This came late.
I like the background synth effects you used, they add a spooky feeling to this song.
The melodies you used also help depict a really "halloween"ish mood. Not too happy, not too sad and somewhat spooky.
Honestly, you could have made the synths more airy and distant, possibly by adding some heavy reverb. Some ambience wouldn't hurt too.
Still, this is a pretty decent tune. Like the mood this gives. Especially since it's night right now. *shivers*