If I sell a beat and the artist makes a hit off it, how do we negotiate what I am supposed to be paid? Should I include my real name and PRO ID# or whatever you need to fill out a split sheet, in my exclusive rights license contract? also an explanation like oh if this song were to get big i want 5% or whatever it may be? How does getting credited/paid legitely work? I know you are supposed to take an advance in the beginning but I am confused about what comes after that