Keith Matthew Thornton (born c. 1964), better known as Kool Keith, is an American hip hop artist and record producer. Biography An original member of New York's new school pioneers the Ultramagnetic MCs, Thornton is best known as a solo rapper. His signature style is stream-of-consciousness lyrical flow and complex vocals, two skills that earn him a perennial nod from the underground hip-hop community. The average Kool Keith album is peppered with bizarre, disjointed, and disassociate