I am a rap artist and produce all of my music at my studio. I am also starting to produce other artists, and not only rap artist. I have a particular beat that I am planning on rapping on. At the same time, I have this other manager that is wanting to put his artist on that same beat. 1. How can I make money off the beat in the future if his artist makes it big? (copyrights? contracts? BMI?) 2. Can I also rap on the same beat? Do I need to copyright just my beat? or the finished song with me rapping on it? Thank you! God Bless!