The Unison reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Unison

In music, a unison is an interval, the ratio of 1:1 or 0 halfsteps and zero cents. Two tones in unison are considered to be the same pitch, but are still perceivable as coming from separate sources. The unison is considered the most consonant interval while the near unison is considered the most dissonant. The unison is also the easiest interval to tune. Composer Kenneth Gaburo wrote for three voices singing unison in his piece The Flow of (u).

See also: diapason.

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In politics, UNISON is the British trade union of the public service.

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In the 1970s Unison was a short lived civil defence outfit supported by right wing politicians such as Ross McWhirter.

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