Gave it a couple of listens, here's my feedback.

I like the way you hold that first note, it shows that you aren't afraid of low attention spans out there. And it sets the tone for the rest of the song. The opening piano and drum mix work very nicely, I really like the way the drums circle around.

A very emotional song, and overall quite well put together. The one thing that does need work is the lyrics mix- it's too separate from the instruments. Not sure what to do, but some way to bring your voice back a bit, or the instruments forward, it takes me out of the song as it is now. And maybe a retake on the singing, you wobbled a little in a few parts (I know, it's just a demo).
Powerful stuff otherwise.