Its really good to hear a pop song with a darker tone (unlike the candy sweet crap on the radio today) I love the blend of distorted guitars and orchestral strings that make the intro especially, sound so menacing and large.
Only thing I would have done different is cut the ending down by about 30 seconds as to keep the song from dragging too much. But I think this may simply be a preference of mine in my own song writing. Also, fantastically mixed for a demo this sounds very complete to me.
Thanks man. It's still in the demo phase because there are some things that need to be added to it. Such as a more guitar parts towards the end (which will help keep it from dragging), more vocals, and I need to even out the volume levels a little more and work with the compression. I'll be posting the final product when it's complete. :)