Guido of Arezzo's Micrologus (1 ene 990 año – 17 mar 1050 año)

Descripción:

Guido of Arezzo himself lived from around 990-1050. He created his Micrologus (Little Treatise) in 1030. This was an innovation at the time because it contained outlines of singing and teaching practice of Gregorian Chant. Also it had important discussion on polyphonic music. Guido of Arezzo also was the first to describe a hexachord. A hexachord is a six not series exhibited in a scale or tone row.

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