No clue
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Seattle rapper Ricky Brown, aka "'No Clue'", holds the official Guinness world record as the world's fastest rapper, breaking the previous record by Chicago rapper Rebel XD, which had stood for seven years. No Clue broke the record by rapping 723 syllables in 41.27 seconds on his track “No Clue” on January 15, 2005, in front of a licensed speech therapist.
official website: www.nocluemusic.com