Guido of Arezzo
Overview
 
Guido of Arezzo or Guido Aretinus or Guido da Arezzo or Guido Monaco or Guido d'Arezzo (991/992 – (17 May?) 1050) was a music theorist of the Medieval
Medieval music
Medieval music is Western music written during the Middle Ages. This era begins with the fall of the Roman Empire and ends sometime in the early fifteenth century...

 era. He is regarded as the inventor of modern musical notation
Musical notation
Music notation or musical notation is any system that represents aurally perceived music, through the use of written symbols.-History:...

 (staff notation
Staff (music)
In standard Western musical notation, the staff, or stave, is a set of five horizontal lines and four spaces that each represent a different musical pitch—or, in the case of a percussion staff, different percussion instruments. Appropriate music symbols, depending upon the intended effect,...

) that replaced neumatic notation
Neume
A neume is the basic element of Western and Eastern systems of musical notation prior to the invention of five-line staff notation. The word is a Middle English corruption of the ultimately Ancient Greek word for breath ....

; his text, the Micrologus
Micrologus
The Micrologus is a treatise on Medieval music written by Guido of Arezzo, dating to approximately 1026. It was dedicated to Tedald, Bishop of Arezzo. This treatise outlines singing and teaching practice for Gregorian chant, and has considerable discussion of the composition of polyphonic...

, was the second-most-widely distributed treatise on music in the Middle Ages (after the writings of Boethius).

Guido was a monk
Monk
A monk is a person who practices religious asceticism, living either alone or with any number of monks, while always maintaining some degree of physical separation from those not sharing the same purpose...

 of the Benedictine
Benedictine
Benedictine refers to the spirituality and consecrated life in accordance with the Rule of St Benedict, written by Benedict of Nursia in the sixth century for the cenobitic communities he founded in central Italy. The most notable of these is Monte Cassino, the first monastery founded by Benedict...

 order from the Italian city-state of Arezzo
Arezzo
Arezzo is a city and comune in Central Italy, capital of the province of the same name, located in Tuscany. Arezzo is about 80 km southeast of Florence, at an elevation of 296 m above sea level. In 2011 the population was about 100,000....

.
 
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