Xenharmonic music includes all tuning systems and music using those systems not using the common European twelve-tone equal temperament. The term was coined by Ivor Darreg from the Greek for strange or foreign, xenos, though it often includes all microtonal music. Xenharmonic tunings include nineteen or other tone equal temperament, some tunings based on the 'music of the spheres', or less systematic tunings such as Annie Gosfield's purposefully "out of tune" sampler based music. Other composers of xenharmonic music include Elodie Lauten, Wendy Carlos, and many others. In music, tuning is the process of producing or preparing to produce a certain pitch in relation to another, usually at the unison but often at some other interval. ... Wikibooks Wikiversity has more about this subject: School of Music Look up Music on Wiktionary, the free dictionary Wikisource, as part of the 1911 Encyclopedia Wikiproject, has original text related to this article: Music Wikicities has a wiki about Music: Music MusicNovatory: the science of music encyclopedia Science of Music... Equal temperament is a scheme of musical tuning in which the octave is divided into a series of equal steps (equal frequency ratios). ... Ivor Darreg (May 5, 1917 - 1994) was a leading proponent of and composer of microtonal or xenharmonic music. ... Microtonal music is music using microtones -- intervals of less than a semitone, or as Charles Ives put it, the notes between the cracks of the piano. ... Musica universalis or music of the spheres is a medieval philosophical concept that regards the proportions in the movements of the celestial bodies - the sun, moon and planets - as a form of musica (the medieval Latin name for music). ... Annie Gosfield (born 1960) is a New York composer who specializes in using detuned or out of tune samples and industrial noises. ... Elodie Lauten (b. ... Wendy Carlos in 1980 Wendy Carlos (born Walter Carlos -- see Personal life section below -- November 14, 1939 in Pawtucket, Rhode Island) is an American composer and electronic musician. ...

Further reading

• Tuning, Timbre, Spectrum, Scale by William Sethares, ISBN 354076173X.

See also

• just intonation
• Bohlen-Pierce scale
• pseudo-octave
• regular temperament

Just intonation is any musical tuning in which the frequencies of notes are related by whole number ratios. ... The Bohlen-Pierce scale (BP scale) is a musical scale that offers an alternative to the 12-tone equal temperament typical in western music. ... A pseudo-octave is an interval whose frequency ratio is not 2:1, the definition of an octave, but is treated in some way or ways equivalent to this ratio. ... Regular temperament is a system of musical tuning such that each frequency ratio is obtainable as a product of powers of a finite number of generators, or generating frequency ratios. ...

External links

• Tonalsoft Encyclopaedia of Tuning
• Microtonal music on CD