c.995 - 1050
Guido of Arezzo was a monk at the monastery of S.Croce di Fonte Averllana in Umbria, Italy. Guido invented a novel form of music notation.
He replaced letters with notes, written on four lines on a sheet of music. He also introduced the syllables do, re, mi, fa, sol, la which are used today in Latin countries as the names of the notes from c to a.
Before his time melodies were learned by heart, since symbols used to notate them were not precise, but served only as aids to memory.
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