made beatboxin an essential part of the artform and he used it as part of his own overall showmanship...

But imo opinion, Rahzel is the best I've seen/heard do it...it's like he builded upon what Dougie started...I will never forget when Rahzel straight ripped the booth on 'Rap City the Basement' w/his rhyming and beatboxin..I think he outdid Blk Thought which is saying a lot