Actually, you should be the last to say that. Eminem is not a
top producer, and Yes, the Neptunes produce their own shit. They actually play instruments unlike other producers. Check credits on the N.E.R.D. albums, they create everything from scratch, but they have Spymob to perform it. And in no way does that mean they are "programmers" or shit of that nature. I get where you're coming from, but I would edit your comment and take out names and replace names. Shit's a bit misleading; Especially if you are trying to teach something you seem to be so confident about.