Topmusicanswers
In classical music from Western culture, a fifth is the interval from the first to the last of five consecutive notes in a diatonic scale. The perfect fifth (often abbreviated P5) spans seven semitones, while the diminished fifth spans six and the augmented fifth spans eight semitones.
Why is it called a fifth in music?
Similarly the interval between C and G in the key of C major is also a Fifth because C D E F G = 5 notes in the diatonic C major scale. So that's what makes the interval a "Fifth".
Why are fifths important in music?
The circle of fifths is a diagram used in music theory that helps students memorize and understand the 24 major and minor keys used in music, key relationships, and many chord relationships. ... It ties together many common relationships found in music.
