Oh no I didn't read it, but yes i've heard of Rahzel, he's like the don dada of beatboxing, heard his steez on Roni/Reprazent album and a couple of tracks he's done in the past.
My brother is a beatboxer.
Dont ask me how he does it, I didnt think it was possible untill I saw it. Lots and lots of practice, its pretty much all he does!