12 notes or 13 depending on how you look at it.
C, #C, D, #D, E, F, #F, G, #G, A, #A, B, (C)
G, A#, B#, C#, D#, E# and Fx (I'm using all scale degrees for this). Fx is F double sharp which means 'F sharp sharp', which is the same as G.
Scale
A scale.
The Diatonic scale (most commonly knows as the Major Scale) has 7 unique pitches. For example: C D E F G A B would be considered the notes of the C Major scale. Although traditionally the C would repeat again on top, it is to a NEW note, but simply the repeating of the first (root) note. The chromatic scale contains 12 notes, and it is most easily explained as every note on the piano within an Octave. C C# D D# E F F# G G# A A# B The Diminished Scale contains 8 notes Example: C C# D# E F# G A Bb And the Whole Tone Scale contains 6 notes Example: C D E F# G# A#
In jazz and blues, a blue note (also "worried" note) is a note sung or played at a slightly lower pitch than that of the major scale for expressive purposes. Typically the alteration is a semitone or less, but this varies among performers and genres. Country blues, in particular, features wide variations from the diatonic pitches with emotive blue-notes. Blue notes are often seen as akin to relative pitches found in traditional African work songs. TRUE (apex)
The notes of the blues scale in the key of C are C, Eb, F, Gb, G, Bb.
The notes of the blues scale in A are A, C, D, Eb, E, and G.
The notes to F blues scale are: F, Ab, Bb, Cb, C, Eb and F.
The blues scale is unique because it includes "blue notes," which are notes that are slightly lowered in pitch compared to the standard major or minor scale. These blue notes give the blues scale its distinct and expressive sound, often associated with feelings of sadness or longing.
A "blues scale" consists of the root, minor third, fourth, flatted fifth, natural fifth, minor seventh and the root again. The notes for the C Blues Scale would be C, Eb, F, Gb, G, Bb and C again.
The blues scale is important in music theory because it adds a distinct sound and emotion to blues music. It includes specific notes that create a "bluesy" feel, such as the flattened third and seventh notes. These notes give the music a sense of tension and sadness, which are key elements of the blues genre. Overall, the blues scale contributes to the unique sound and emotional depth of a blues composition.
1-2-2,5-3-5-7
C Blues scale: C D# F F# G A# C And then back down again. The other scales follows the same model: D blues scale: D F G G# A C D Just check the distance between the notes and you will get the rest too!
A C D Eb E G A The notes might tecnecally be different, but this works enharmonically.
D, f, g, ab, a, c and d
simple answer: because of the instruments and the phrasing of the notes that they play. Blues music uses a special variant of the scales called unsurprisingly "The Blues scale". Which is the minor pentatonic scale plus an extra note. In C major these notes would be; C - Eb - F - Gb - G - Bb - C It is the intervals between these notes that produces a sad emotional response by humans.
The simple blues scale beginning on C is: C, Eb, F, F#(Gb), G, Bb, C. Disregarding the repeated C, there are only six notes in the scale so it is sometimes called hexatonic (six tone) blues scale. There are other versions and alterations of the blues scale, as well.