That's a tricky question because it's very difficult to come up with precise figures as to how much A-list musicians will earn in a given month or in a given year compared to the rest of the music executives or record label owners.
However, if we are generally talking about certain jobs in the music industry you bet there is no way recording, mixing, mastering engineers and other record label employees can match the money an A-list will make if they go on a world tour or better yet if they perform at an elite private function.