Very cool! It’s really easy to make something that looks like I knew what I was doing, when I don’t at all! :)
One missed opportunity that I see with sites that allow HN people to play with things and be creative (e.g. I’ve seen a bunch of sound loop makers do this): add a quick “share” link for us to show some creations. Not that I really want to share anything I did, but would love to see what others have made!