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between the 7th an 9th centuries
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we call this musical repertoire Gregorian chant in honour of Pope.
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there are the first symbols, and they are written on top of the words to show the changes of pitch
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there are the first symbols, and they werw written on top of the words to show the changes of pitch.
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He was a teacher in the cathedral school in arezzo,Italy.
As well has inventing the Guidonian hand, he created the four-line stave and gave the notes the names that we still use today.