Imagine listening to a rap instrumental beat. Not simply any old beat, one which you have made. It's invention, your masterpiece, your gift to everyone. You don't need to to worry about a legal case for copyright infringement. You don't have to bother with originality. You only need to panic about how you will result in the next beat.
Making your own personal hiphop instrumental beats is a lot easier than you might think. You can get CDs with instrumental beats or download some free of charge, but when you build your own you push your creativity.