All rights for parts I create/compose belong to me. You can purchase the rights for $500. At $50 you are just reimbursing the time I spent doing your song. I don't charge for commercial use, but I want to retain the rights so I can upload in my portfolio, or in case another of my songs sounds too much like the one I made for you it wld be ridiculous to be sued for my own creation. But u can be assured that you get the best & not the 2nd grade melodies I will never use for myself.