Guido of Arezzo
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Guido of Arezzo was an Italian music theorist and pedagogue of High medieval music. A monk from the Order of Saint Benedict, he is regarded as the inventor—or by some, developer—of the modern staff no
Guido depicted in a medieval manuscript
Guido (left) showing Tedald the monochord, depicted in an 11th-century medieval manuscript
Guido Aretino Florence
Guido Monaco, statue
Guidonian hand
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The Guidonian hand was a mnemonic device used to assist people learning to sight-sing. Some form of the device may have been used by Guido of Arezzo, a medieval music theorist who wrote several treati
Guido of Arezzo
…for later use as Sol-sharp). "Ti" is used in tonic sol-fa and in the song "Do-Re-Mi". Guido is somewhat erroneously credited with the invention of the Guidonian hand, a widely used mnemonic system where note names are mapped to parts of the human hand. Only a rudimentary form of the Guidonian hand is actually described…
One example of the Guidonian hand, from a Bodleian Library MS