Sounds nice. I second Bud and Janice's comment about the public release of your song. If anything, in my opinion, it only strengthens your case as to who is the composer to get it up online earlier. There may be some other reasons, such as marketing, etc, to hold off from presenting it too earlier. But proof of authorship is not one (as I said, in my opinion.)

This is not to say that you should not register your copyright with the Library of Congress if you plan on commercial use of your song. Registration is not the same as copyright. It is simply registering your claim of copyright with the Library of Congress, and there are plenty good reasons to do that if your song is to have any commercial success.

Good luck with your project.

Steve

Steve Young
Music
"In order to compose, all you need to do is remember a tune that nobody else has thought of." - Robert Schumann