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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 ...
In the case of the lowered third over the root (or the lowered seventh over the dominant), the resulting chord is a neutral mixed third chord. Blue notes are used in many blues songs, in jazz, and in conventional popular songs with a "blue" feeling, such as Harold Arlen's "Stormy Weather". Blue notes are also prevalent in English folk music. [5]
List of musical scales and modes Name Image Sound Degrees Intervals Integer notation # of pitch classes Lower tetrachord Upper tetrachord Use of key signature usual or unusual ; 15 equal temperament
The chord-scale system may be compared with other common methods of improvisation, first, the older traditional chord tone/chord arpeggio method, and where one scale on one root note is used throughout all chords in a progression (for example the blues scale on A for all chords of the blues progression: A 7 E 7 D 7). In contrast, in the chord ...
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]
In the key of C major, the I major 7 chord is "C, E, G, B," the iii chord ("III–7" [11]) is E minor 7 ("E, G, B, D") and the vi minor 7 chord is A minor 7 ("A, C, E, G"). Both of the tonic substitute chords use notes from the tonic chord, which means that they usually support a melody originally designed for the tonic (I) chord.
For example, the chord C 6 contains the notes C–E–G–A. The minor sixth chord (min 6 or m 6, e.g., Cm 6) is a minor triad, still with a major 6. For example, the chord Cm 6 contains the notes C–E ♭ –G–A. The augmented sixth chord usually appears in chord notation as its enharmonic equivalent, the seventh chord.
Its relative minor is E-flat minor (or enharmonically D-sharp minor). Its parallel minor, G-flat minor, is usually replaced by F-sharp minor, since G-flat minor's two double-flats make it generally impractical to use. Its direct enharmonic equivalent, F-sharp major, contains six sharps. The G-flat major scale is: