Cuarto intermedio para los Kyries segundo tono

Antonio de Cabezón (30 March 1510 – 26 March 1566) was a Spanish Renaissance composer and organist. Blind from childhood, he quickly rose to prominence as a 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. (Wikipedia)

Playing Julia Krespay
The recording was made from the sample set of original surround version of the Budapest Aeris-Castilian replica organ. a = 415 Hz, aequal temperament.