Antonio de Cabezón (1510 1566) was a Spanish Renaissance composer and organist. Blind from childhood, he quickly rose to prominence as performer and was eventually employed by the royal family. He was among the most important composers of his time and the first major Iberian keyboard composer. Cabezón's variations are one of the earliest high points of the genre, and presumably influenced English composers such as Thomas Tallis and William Byrd. This version is transcribed by Prof. Elliot Chasanov (University of Illinois).