semicord

C blues scale

Notes
C Eb F Gb G Bb
Formula
1 b3 4 b5 5 b7
Steps
W+H W H H W+H W (W tone, H semitone)
Also called
C minor blues scale, C hexatonic blues

Six notes from C up to the next C. Each note is written with the letter its degree names, so the spelling follows the formula.

C blues on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4Gb4Ab4Bb4C#5Eb5F#5Ab5Bb5CC4EbFGbGBbCC5

From C4 to C5, the root in blue-green.

Intervals from C

NoteDegreeIntervalSemitones
C1root0
Ebb3minor third3
F4perfect fourth5
Gbb5diminished fifth6
G5perfect fifth7
Bbb7minor seventh10

C blues on the guitar

Standard tuning, high e on top as in tablature, open strings to fret 12. Every dot is a note of the scale; the pattern repeats from fret 12 up.

eBGDAE357912FGbGBbCEbCEbFGbGBbGBbCEbFGbGEbFGbGBbCBbCEbFGbGFGbGBbCEb

Chords that fit C blues

Every chord of the common types (triads, sus, sixths, sevenths, add9, 7b9, 7#9) whose notes are all in the scale, on each of its notes, spelled as on the chord pages. A 6-note scale has no single set of "the" chords the way a seven-note scale does.

OnChords
CCm, Cdim, Csus4, Cm7, Cm7b5, C7sus4
EbEb, Ebm, Ebsus2, Eb6, Ebm6, Ebadd9
FFsus2, Fsus4, F7sus4
Gbnone of the common types
Gnone of the common types
BbBbsus2, Bbsus4

How C blues is built

The C minor pentatonic scale with one note added: the flat 5th, Gb, between F and G. That note is the "blue note", usually played in passing or bent up to G rather than held. The scale is played over all three chords of a blues in C, although its minor 3rd, Eb, clashes on paper with the major chord C; that friction is the blues sound, and guitarists often bend the Eb slightly sharp.

Played some notes and not sure which scale they come from? The scale finder listens to the piano, a MIDI keyboard or the microphone and ranks all 180 scales.

What this page cannot do

  • One spelling per scale. the root is spelled the way that needs the fewest sharps and flats.
  • Equal temperament only. Blues and many folk traditions bend notes between these pitches, and Arabic and Turkish maqam scales use quarter tones that a piano cannot play.
  • The guitar diagram shows standard tuning only and does not suggest fingerings; any note can be played in several places.
  • The sound is a simple synthesised tone made in your browser, not a recorded instrument.

Made with AI tools.