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The term blues scale refers to several different scales with differing numbers of pitches and related characteristics. A blues scale is often formed by the addition of an out-of-key "blue note" to an existing scale, notably the flat fifth addition to the minor pentatonic scale. However, the heptatonic blues scale can be considered a major scale ...
The blues scale is so named for its use of blue notes. Since blue notes are alternate inflections, strictly speaking there can be no one blues scale, [8] but the scale most commonly called "the blues scale" comprises the minor pentatonic scale and an additional flat 5th scale degree: C E ♭ F G ♭ G B ♭ C. [9] [10] [11]
For example, the blues scale is predominantly derived from the minor pentatonic scale, a very popular scale for improvisation in the realms of blues and rock alike. [73] For instance, over a C major triad (C, E, G) in the key of C major, the note F can be perceived as dissonant as it is a half step above the major third (E) of the chord.
Chord-scale system. Heptatonic scale. Jazz scale. List of chord progressions. List of chords. List of musical intervals. List of pitch intervals. Arabian maqam. Modes of limited transposition.
The six-note blues scale consists of the minor pentatonic scale plus a chromatic passing tone between the 4 and 5. This added note can be spelled as either ♭ 5 or ♯ 4. Guitarists often mix the major and minor pentatonics together along with the blues scale. Another common blues scale has nine notes (shown to the right).
Some scales use a different number of pitches. A common scale in Eastern music is the pentatonic scale, which consists of five notes that span an octave. For example, in the Chinese culture, the pentatonic scale is usually used for folk music and consists of C, D, E, G and A, commonly known as gong, shang, jue, chi and yu. [14] [15]
The hexatonic (6-note) blues scale is similar to the minor pentatonic scale and fits the above definition. However, the flat fifth is present as a passing tone along with the perfect fifth, and the scale is often played with microtonal mixing of the major and minor thirds – thus making it harder to classify as a "major" or "minor" scale.
A minor pentatonic scale; play ⓘ In melody, blues is distinguished by the use of the flattened third, fifth and seventh of the associated major scale. [33] Blues shuffles or walking bass reinforce the trance-like rhythm and call-and-response, and they form a repetitive effect called a groove.