Unison

In Music, a unison (or premium ) is the interval between a note and its repetition, for example C-C with very the height. If the distance between these two notes is null, their lengths (rates/rhythms) , their stamps (instruments) or their intensities (nuances) can be different.

  • Like any interval, unison can be a melody interval, when these notes are emitted successively , or a harmonic interval, when these notes are emitted simultaneously .

  • a unison could be qualified of “just”, but as by definition, it can be neither increased, nor decreased, this qualification is not used.

  • unison is the only interval with the decreased second and the third under-decreased (Enharmonie) not to produce any melody Mouvement and not to contain that only one harmonic height .

  • the inversion of unison is the octave right. The redoubling of unison is also the octave right.

; Exception Unison being especially same a Note played by two instruments or different Singer S, by extension, the expression to play or sing in unison is said when several desks of a Orchestre or a chorus carries out simultaneously a identical melody, even if it is heard on one or more octave S. For example, the beginning of the first topic of the first movement of the Symphonie n° 9 of Beethoven is played in unison by all the orchestra and on five octaves.

See too

Simple: Unison

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