Since so much of rap is “making it” yourself, I guess there’s bound to be more shoutouts to the music industry itself.
(I couldn’t find a good repository of lyrics for any other genre, but I’m guessing that this is a lot of mentions of both major broadcast licensers.)
P.S.: If you can find it, De La Soul’s “Live @ the Dugout 87” is tight. It was on some mixtape I have, but I can’t remember which one…