991-2 - after 1033
Early Music Period
Guido of Arezzo was a music theorist during the Middle Ages, whose text, Micrologus, was the second-most widely used musical instruction book of its time. He is remembered for creating the musical notation that placed pitches on lines and spaces. This is the staff used today. He also developed a sight singing method using syllables to teach chants in a short time.
See other composers from the Early Music period