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Encyclopedia > Perfect fifth

The perfect fifth or diapente is one of three musical intervals that span five diatonic scale degrees; the others being the diminished fifth, which is one semitone smaller, and the augmented fifth, which is one semitone larger. The prefix perfect identifies it as belonging to the group of perfect intervals, so called because of their extremely simple pitch relationships resulting in a high degree of consonance. In music theory, an interval is the difference (a ratio or logarithmic measure) in pitch between two notes and often refers to those two notes themselves (otherwise known as a dyad). ... In music theory, a diatonic scale (from the Greek diatonikos, to stretch out; also known as the heptatonia prima; set form 7-35) is a seven-note musical scale comprising five whole-tone and two half-tone steps, in which the half tones are maximally separated. ... This article is about the musical interval. ... A semitone (also known in the USA as a half step) is a musical interval. ... An augmented fifth is one of three musical intervals that span five diatonic scale degrees. ... In music, a consonance (Latin consonare, sounding together) is a harmony, chord, or interval considered stable, as opposed to a dissonance, which is considered unstable. ...


It occurs most commonly built on the root of all major and minor triads and their extensions. However, due to its high level of consonance in this position, the perfect fifth contributes very little to the overall harmonic effect of any chords containing it (power chords excepted). In any situation that necessitates the omission of notes from a chord, such as for practical reasons of fingering, for example, the note forming the perfect fifth above the chord's root can often be safely omitted, its absence being barely, if at all, noticeable. The root (basse fondamentale) of a chord is the note upon which that chord is perceived or labelled as built or centered, the root of a chord in root position or normal form. ... Generally speaking, a major chord is any chord which has a major third above its root, as opposed to a minor chord which has a minor third. ... Generally speaking, a minor chord is any chord which has a minor third above its root, as opposed to a major chord which has a major third. ... Extended chords are tertian chords (built from thirds) or triads with notes extended, or added, beyond the seventh, including all the thirds in between the seventh and the extended note. ... In music and music theory, a chord (from the Middle English cord) short for accord is three or more different notes or pitches sounding simultaneously, or nearly simultaneously, over a period of time. ... In music, a power chord is, in the broadest sense, a chord that remains euphonious when distorted by amplification. ...


The 'perfect fifth is abbreviated as P5 and its inversion is the perfect fourth. The perfect fourth or diatessaron, abbreviated P4, is one of two musical intervals that span four diatonic scale degrees; the other being the augmented fourth, which is one semitone larger. ...


A perfect fifth in just intonation, a just fifth, corresponds to a pitch ratio of 3:2, while in 12-tone equal temperament, a perfect fifth is equal to seven semitones, a ratio of 1:27/12 (approximately 1.4983), or 700 cents, about two cents smaller. Just intonation is any musical tuning in which the frequencies of notes are related by whole number ratios. ... Equal temperament is a scheme of musical tuning in which the octave is divided into a series of equal steps (equal frequency ratios). ... A semitone (also known in the USA as a half step) is a musical interval. ... The cent is a logarithmic unit of measure used for musical intervals. ...


The just perfect fifth, together with the octave, forms the basis of Pythagorean tuning. In music, an octave (sometimes abbreviated 8ve or 8va) is the interval between one musical note and another with half or double the frequency. ... Pythagorean tuning is a system of musical tuning in which the frequency relationships of all intervals are based on the ratio 3:2. ...


The circle of fifths is a model of pitch space for the chromatic scale (chromatic circle) which considers nearness not as adjacency but as the number of perfect fifths required to get from one note to another. In music theory, the circle of fifths is an example of a modulatory space. ... In music pitch space is the modeling of pitch relationships, represented through mathematical models, most often multidimensional, describing how near or far pitches are from each other. ... The chromatic scale is any musical scale that contains more than one consecutive half-step (in other words two adjacent pairs of scale degrees or members which are separated by a semitone). ...


The perfect fifth is considered the most consonant interval outside of the unison and octave. In music, a consonance (Latin consonare, sounding together) is a harmony, chord, or interval considered stable, as opposed to a dissonance, which is considered unstable. ... UNISON logo UNISON is the largest trade union in the United Kingdom, with over 1. ... In music, an octave (sometimes abbreviated 8ve or 8va) is the interval between one musical note and another with half or double the frequency. ...


The strings on violins, violas, and cellos are all tuned to perfect fifths unless in scordatura. A scordatura (literally Italian for mistuning) is an alternate tuning used for the open strings of a string instrument. ...


A bare fifth or open fifth is a chord containing only a perfect fifth with no third. The closing chord of Mozart's Requiem is an example of a piece ending on an open fifth, though these "chords" are common in Christian Sacred Harp singing and throughout rock music, including hard rock, metal, and punk music, where they are called power chords if played with distortion or overdrive. Power chords often have octave doubling (i.e. their bass note is doubled one octave higher, e.g. F3-C4-F4). Wolfgang Amadeus Mozart Wolfgang Amadeus Mozart (January 27, 1756 – December 5, 1791) was one of the most significant and influential of all composers of Western classical music. ... Wolfgang Amadeus Mozart wrote the Requiem mass in D minor (K. 626) in 1791. ... Sacred Harp singing is a tradition of sacred choral music that took root in the Southern region of the United States. ... Rock and roll (also spelled Rock n Roll, especially in its first decade), also called rock, is a form of popular music, usually featuring vocals (often with vocal harmony), electric guitars and a strong back beat; other instruments, such as the saxophone, are common in some styles. ... Hard rock is a form of rock and roll music which finds its closest roots in early 1960s garage rock. ... It has been suggested that this article or section be merged into Heavy metal music. ... Punk Rock is an anti-establishment music movement that began about 1976 (although precursors can be found several years earlier), exemplified by The Ramones,the Misfits, the Sex Pistols, The Clash and The Damned. ... In music, a power chord is, in the broadest sense, a chord that remains euphonious when distorted by amplification. ... Overdrive can mean any of the following: Overdrive (mechanics), a part of automobile transmissions aimed at increasing fuel efficiency Overdrive (music), the practice of forcing output of a guitar amplifier past maximum, resulting in distortion Intel 80486 OverDrive, a CPU specifically designed for personal computer upgrades Pentium OverDrive, a CPU...


See also

This page is about musical systems of tuning, for the musical process of tuning see tuning. ... The augmented fourth between C and F# forms a tritone. ...

External links

Perfect fifth
# semitones Interval class # cents in equal temperament Most common diatonic name Comparable just interval # cents in just interval Just interval vs. equal-tempered interval
7 5 700 perfect fifth 3:2 702 2 cents larger
Other diatonic intervals
unison | minor second | major second | minor third | major third | perfect fourth | tritone | perfect fifth | minor sixth | major sixth | minor seventh | major seventh | octave

  Results from FactBites:
 
Perfect fifth - Wikipedia, the free encyclopedia (415 words)
The perfect fifth or diapente is one of three musical intervals that span five diatonic scale degrees; the others being the diminished fifth, which is one semitone smaller, and the augmented fifth, which is one semitone larger.
The 'perfect fifth is abbreviated as P5 and its inversion is the perfect fourth.
The circle of fifths is a model of pitch space for the chromatic scale (chromatic circle) which considers nearness not as adjacency but as the number of perfect fifths required to get from one note to another.
Article about "Interval (music)" in the English Wikipedia on 24-Apr-2004 (1515 words)
The interval of a note from its tonic is its scale degree, thus the fifth degree of a scale is a fifth from its tonic.
Perfect fifth & perfect fourth: The ratio of 3:2 is a perfect fifth, two pitches, one note 1.5 times the pitch of another.
The inverse of a perfect fifth is a perfect fourth.
  More results at FactBites »


 

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