Perfect fifth

The perfect fifth or diapente is the interval between the first note (the root or tonic) and the fifth note in a major scale. It is the inversion of the perfect fourth. Its abbreviation is P5.

Related Topics:
Interval - Major scale - Inversion - Perfect fourth

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

A perfect fifth in just intonation, a just fifth, corresponds to a pitch ratio of 2:3, while in 12-tone equal temperament, a perfect fifth is equal to seven (7) semitones, a ratio of 1:27/12 (approximately 1.4983), or 700 cents, about two cents smaller.

Related Topics:
Just intonation - Equal temperament - Semitone - Cent

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

The just perfect fifth, together with the octave, forms the basis of Pythagorean tuning.

Related Topics:
Octave - Pythagorean tuning

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

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.

Related Topics:
Circle of fifths - Pitch space - Chromatic scale

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

The perfect fifth is considered the most consonant interval outside of the unison and octave.

Related Topics:
Consonant - Unison - Octave

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

The strings on violins, violas, and cellos are all tuned to perfect fifths unless in scordatura.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

A power chord, 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 rock music including hard rock, metal, and punk music.

Related Topics:
Power chord - Mozart - Requiem - Rock music - Hard rock - Metal - Punk music

~ ~ ~ ~ ~ ~ ~ ~ ~ ~