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From Wikipedia, the free encyclopedia

The term blues scale refers to several different scales with differing numbers of pitches and related characteristics.

Types

Hexatonic

The hexatonic, or six-note, blues scale consists of the minor pentatonic scale plus the 5th degree of the original heptatonic scale.[1][2][3] This added note can be spelled as either a 5 or a 4.

 {
\override Score.TimeSignature #'stencil = ##f
\relative c' { 
  \clef treble \time 6/4
  c4 es f fis g bes c2

} }

A major feature of the blues scale is the use of blue notes;[4] however, since blue notes are considered alternative inflections, a blues scale may be considered to not fit the traditional definition of a scale.[5] At its most basic, a single version of this blues scale is commonly used over all changes (or chords) in a twelve bar blues progression.[6] Likewise, in contemporary jazz theory, its use is commonly based upon the key rather than the individual chord.[2] The evolution of this scale may be traced back to Asia (pentatonic major) through native North America (pentatonic minor) with the addition of the flat-5 blue note (slave trade/Africa).

Greenblatt defines two blues scales, the major and the minor. The major blues scale is 1, 2,3, 3, 5, 6 and the minor is 1, 3, 4, 5, 5, 7.[7] The latter is the same as the hexatonic scale described above.

Heptatonic

The heptatonic, or seven-note, conception of the blues scale is as a diatonic scale (a major scale) with lowered third, fifth, and seventh degrees,[8] which is equivalent to the dorian 5 scale, the second mode of the harmonic major scale. Blues practice is derived from the "conjunction of 'African scales' and the diatonic western scales".[9]

 {
\override Score.TimeSignature #'stencil = ##f
\relative c' { 
  \clef treble \time 7/4
  c4 d es f ges a bes c2

} }

Steven Smith argues that, "to assign blue notes to a 'blues scale' is a momentous mistake, then, after all, unless we alter the meaning of 'scale'".[10]

Nonatonic

An essentially nine-note blues scale is defined by Benward and Saker as a chromatic variation of the major scale featuring a flat third and seventh degrees (in effect substitutions from Dorian mode) which, "alternating with the normal third and seventh scale degrees are used to create the blues inflection. These 'blue notes' represent the influence of African scales on this music."[11]

 {
\override Score.TimeSignature #'stencil = ##f
\relative c' { 
  \clef treble \time 9/4
  c4 d es( e) f g a bes( b) c2

} }

A different and non-formal way of playing the scale is by the use of quarter tones, added to the 3rd and 7th degrees of the minor blues scale. For example, the A minor blues scale with quarter tones is A–B–C

half sharp–D–E–F–G
half sharp
, where
half sharp
is a half sharp. Also, the note D can be used as an additional note. Guitar players can raise a given note by a quarter tone through bending.

Usage

In jazz, the blues scale is used by improvising musicians in a variety of harmonic contexts. It can be played for the entire duration of a twelve bar blues progression constructed off the root of the first dominant seventh chord. For example, a C hexatonic blues scale could be used to improvise a solo over a C blues chord progression. The blues scale can also be used to improvise over a minor chord. Jazz educator Jamey Aebersold describes the sound and feel of the blues scale as "funky," "down-home," "earthy," or "bluesy."[12][page needed]

The blues scale is also used in other genres to reference the blues idiom.[citation needed]

See also

References

  1. ^ Ferguson, Jim (2000). All Blues Scale for Jazz Guitar: Solos, Grooves & Patterns, p.6. ISBN 0-7866-5213-6.
  2. ^ a b Arnold, Bruce (2002). The Essentials: Chord Charts, Scales and Lead Patterns for Guitar, p.8. ISBN 1-890944-94-7.
  3. ^ Harrison, Mark (2003). Blues Piano: Hal Leonard Keyboard Style Series, p.8. ISBN 0-634-06169-0.
  4. ^ "The Pentatonic and Blues Scale". How To Play Blues Guitar. 2008-07-09. Archived from the original on 2008-07-14. Retrieved 2008-07-11.
  5. ^ J. Bradford Robinson/Barry Kernfeld. "Blue Note", The New Grove Dictionary of Jazz, Second Edition, London (2002)
  6. ^ Bryan Helmig (2008-02-25). "Blues Licks From Blues Scales". Between the Licks. Archived from the original on 2008-04-28. Retrieved 2008-06-24.
  7. ^ Greenblatt, Dan (2011). The Blues Scales – Eb Version, p.?. ISBN 9781457101472.
  8. ^ Smallwood, Richard (1980). "Gospel and Blues Improvisation" p.102, Music Educators Journal, Vol. 66, No. 5. (Jan., 1980), p.100-104.
  9. ^ Oliver, Paul. "That Certain Feeling: Blues and Jazz... in 1890?" p.13, Popular Music, Vol. 10, No. 1, The 1890s. (Jan., 1991), pp. 11–19. Cites Rudi Blesh.
  10. ^ Smith, Steven G. (1992). "Blues and Our Mind-Body Problem", Popular Music, Vol. 11, No. 1. (Jan., 1992), pp. 41–52.
  11. ^ Benward & Saker (2003). Music: In Theory and Practice, Vol. I, p.39. Seventh Edition. ISBN 978-0-07-294262-0.
  12. ^ Aebersold, J. (1967). How to Play Jazz and Improvise: Volume One. ISBN 9781562241223.

Further reading

External links

This page was last edited on 30 July 2020, at 12:01
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