Conlon Nancarrow (b. October 27, 1912, Texarkana - d. August 10, 1997, Mexico City) was an American-born composer who lived most of his life in Mexico. Nancarrow is remembered almost exclusively for the pieces he wrote for the player piano. He was one of the first composers to use musical instruments as mechanical machines, utilising their capacity to play complex polyrhythms at tempos far beyond human performance ability. Not becoming widely known until the 1980s, Nancarrow lived most of his life in complete isolation.