A Major Sixth Chord

Chord Tones: A Major Sixth Chord

Symbol: 6, maj6 — Formula: 1-3-5-6

Chord Notation

Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.

Inversions

Harmonic Function

The A major sixth chord commonly functions as the submediant (vi) in C major or dominant (V) in D major. Its harmonic role varies by key — in major keys it provides stable harmonic grounding.

The major sixth chord adds a major sixth to the major triad. It has a warm, pleasant quality with a hint of jazz sophistication, often used as a substitute for the plain major chord. The A Major Sixth Chord specifically contains 4 notes: A, C♯, E, F♯ (formula: 1-3-5-6). On guitar, A-rooted chords anchor to the open A string (5th string), and barre chord shapes rooted on A form the basis of the "A-shape" CAGED system. Blues, rock, and country music use A-rooted chords extensively — the classic 12-bar blues often starts on A, and many rock power chord riffs center on the open A string.

Common Progressions

The A Major Sixth Chord frequently appears in these progression patterns (shown in Roman numeral notation relative to key):

• I6-IV-V
• I6-ii-V

Songs Featuring the Major Sixth Chord

Well-known songs where the A Major Sixth Chord — or this chord type — plays a prominent role:

• My Way – Frank Sinatra
• The Girl from Ipanema – Jobim
• Take Five – Dave Brubeck

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

Scales Containing the A Major Sixth Chord

These scales include the A Major Sixth Chord as a diatonic or characteristic chord: