Guido d'Arezzo

Guido d'Arezzo (gwēˈdō därĕtˈtsō) [key] or Guido Aretinus ârətĪˈnəs, c.990–1050, Italian Benedictine monk, known for his contributions to musical notation and theory. His theoretical work Micrologus (c.1025) is one of the principal sources of our knowledge of organum, an early form of polyphony. His work in musical notation included the addition of two lines (one red, one yellow) to the two already serving as a staff and the use of both the lines and the spaces. Also important was his system of solmization (sometimes called, after him, Aretinian syllables), whereby the syllables ut, re, mi, fa, sol, la are used as names for the six tones, C to A, known as the hexachord. As the octave replaced the hexachord, an additional syllable, si or ti, was added, and eventually ut was replaced by the more singable do. Other revisions of Guido's system that have been suggested from time to time have not survived.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on Guido d'Arezzo from Fact Monster:

  • Guido Aretinus - Aretinus, Guido: Aretinus, Guido: see Guido d'Arezzo.
  • solfège - solfège solfège [Fr.] or solfeggio[Ital.], in music, systems of vocal exercises ...
  • staff - staff staff, in musical notation, a set of horizontal lines upon and between which notes are ...
  • Arezzo - Arezzo Arezzo , city (1991 pop. 91,626), capital of Arezzo prov., Tuscany, central Italy. It is an ...
  • musical notation - musical notation musical notation, symbols used to make a written record of musical sounds. Two ...

See more Encyclopedia articles on: Music: History, Composers, and Performers: Biographies

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