The Guinness Book record holder for Fastest Rap MC is the Seattle-based No Clue (Ricky Brown), breaking the record previously held by Chicago rapper Rebel XD (held for seven years) who broke another Chicago native mainstream rapper Twista's record back in 1993. No Clue broke the record by rapping 723 syllables in 51.27 seconds on his track “No Clue” on January 15, 2005, in front of a licensed speech therapist. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.