Couldn't find anyone, then? It's hard to find someone to spit on a dnb track. Most rappers don't like electronic music, even if they don't know what genre you're producing.
Well, I post here as well as on Future Producers, which is formed on it's majority by rappers. And you can see how they like to segregate them from the "EDM guys" there. There are few interactions between rappers and electronic music producers.