A Blues

ACDEbEG

Diagrams

Staff Notation

Staff Notation

Piano Keyboard

A Blues scale – keys A, C, D, Eb, E, G highlightedPiano keyboard with keys A, C, D, Eb, E, G highlighted. A is the root note.ACDEGEb

Guitar Fretboard

Guitar fretboard diagram for A BluesScale positions across frets 0–12 with notes E, G, A, C, D, Eb.EBGDAE357912

Intervals

DegreeNoteIntervalSemitones
1AP10
2Cm33
3DP45
4Ebd56
5EP57
6Gm710

Diatonic Chords in A Blues

DegreeNumeralChord
1I Asus4
2ii Cm
3III Dsus2

About A Blues

The A Blues contains 6 notes: A, C, D, Eb, E, G. This scale is built by following a specific pattern of intervals from the root note A, which gives it its distinctive sound and character. Understanding the interval structure of a scale is essential for improvisation, composition, and recognizing the scale by ear.

The diatonic chords shown above are the chords that occur naturally within this scale. They are formed by stacking thirds from each degree of the scale, and they form the harmonic foundation for music written in this key. Knowing these chords helps you build chord progressions, understand song harmony, and improvise melodies that fit over each chord. Try the Chord Progression Generator to hear how these chords sound together.