This is great for Bonus Stage music. It's simplistic, but no real emptiness either. Only thing is, I feel some of the structure could use some work, I feel it would sound better if it was longer, and if it didn't slow down towards the end. This is a great start, but could use more variation and structure in the melody, even if it stays this short, but all the elements of the song I like.
Please contact me if you would like to use this in a project. We can discuss the details.