Jimmy Scott is an American jazz vocalist famous for his unusually high contralto voice, which is due to Kallmann's syndrome, a very rare genetic condition. The condition stunted his growth at four feet eleven inches until, at the age of 37, he grew another 8 inches to the height of five feet seven inches. The condition prevented him from reaching puberty, leaving him with a high, undeveloped voice, hence his nickname Little Jimmy Scott.
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