What Is a Pentatonic Scale?
A five-note scale, made by leaving notes out
The sound of the pentatonic features in ancient musical traditions from around the world. It has a pretty, resolved, stable sound. Unlike scales created via the tradition of Western Classical music, the set of pitches in the pentatonic scale do not have any inherent pull in any direction. Some famous melodies formed from the pentatonic scale include Amazing Grace, Stevie Wonder's Superstition and Let It Be by The Beatles.
From a technical point of view, a pentatonic scale is a five-note scale (sometimes written as a 5-note scale) — the prefix penta means five. Where a major or natural minor scale uses seven different notes per octave (a heptatonic scale), a pentatonic scale uses only five. It is built by selecting five notes from a parent diatonic scale and omitting the two that create the most internal dissonance. The two omitted notes are always the ones that would create semitones with their neighbours, so the resulting scale contains no half steps between consecutive notes. This is why the pentatonic is also known as a gapped scale (or, in formal music theory, an anhemitonic scale — anhemitonic meaning "without semitones").
The minor pentatonic scale is built from the natural minor scale by removing the second and sixth degrees. So A natural minor (A, B, C, D, E, F, G) becomes A minor pentatonic (A, C, D, E, G) — five notes, with the B and F left out. The major pentatonic scale is built from the major scale by removing the fourth and seventh degrees. C major (C, D, E, F, G, A, B) becomes C major pentatonic (C, D, E, G, A) — five notes, with the F and B left out.
By removing them, the resulting five-note scale becomes a "no wrong notes" scale: you can play any note of the pentatonic against any chord in the parent key and it will sound consonant. This is why the pentatonic scale is the universal first scale for improvisation. It is also why pentatonic scales appear independently in folk traditions all over the world — Chinese, Japanese, African, Celtic, Native American — pre-dating Western tonal music by centuries.
In jazz, the use of the pentatonic scale crosses boundaries of style. It has been deployed in many different contexts throughout the history of jazz music. Early saxophone players such as Ben Webster and Lester Young based much of the melodic improvisations on notes derived from the pentatonic scale.





