Intervals

Major Sixth

6M · 9 semitones

Nine semitones — warm, open and unmistakably optimistic.

Also written M6 · 6M

Major Sixth

6M · 9 semitones

Play it on your instrument
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From
On the piano, from every note
FromNotesPlay it on your instrument
CC – A
C#C# – A#
DD – B
EbEb – C
EE – C#
FF – D
F#F# – D#
GG – E
AbAb – F
AA – F#
BbBb – G
BB – G#

Tap a key or a fret to hear it.

Number and quality

An interval has two names. The number counts the letter names from the lower note to the upper one, and the quality counts the semitones inside that number. Major Sixth spans 6 letter names, which makes it a sixth, and 9 semitones, which makes it major.

  1. DLetter
  2. ELetter
  3. FLetter
  4. GLetter
  5. 9 semitones

Read on: number and quality · inversion · compound intervals · consonance and dissonance

Every sixth

A sixth can take these qualities, one semitone apart; choose one to see the upper note move and hear the pair.

  1. Open Diminished Sixth →
  2. Open Minor Sixth →
  3. Open Augmented Sixth →

Hear it in music

Songs that open with Major Sixth: the first two notes of each are the interval, which is how most players learn to recognise it.

  • My Bonnie Lies Over the OceanTraditional

    The opening leap is a major sixth.

  • NBC ChimesTraditional

    The first two notes.

  • Jingle Bells (bridge)Traditional

    The "dashing through the snow" leap.

Where it lives

Major Sixth is in every chord whose formula includes 6M from the root, in every scale that includes it from the tonic, and between these pairs of notes in a major key.

Chords built with it

  • C6C · E · G · A

  • Cm6C · Eb · G · A

  • C6/9C · E · G · A · D

Scales that contain it

In C major

  • C–A
  • D–B
  • F–D
  • G–E

Understanding Major Sixth

Names and symbols

Major Sixth is written M6, 6M: the letter is the quality, the number the size. Chord formulas on this site write the number first, as tonal does.

Seconds, thirds, sixths and sevenths come in major and minor, a semitone apart, and can be widened to augmented or narrowed to diminished. Inverting one swaps the quality: a major third becomes a minor sixth, a minor second a major seventh.

How it sounds

A major sixth spans 9 semitones: C – A. It is an imperfect consonance with a bright, generous quality — wide enough to sound open, consonant enough to sound settled.

How composers use it

Added to a major triad it produces the 6 chord, a staple of swing and of vintage pop, brighter and less directional than a major seventh. It is also the inversion of the Minor Third, so a first-inversion major triad spans a major sixth between its outer voices.

Parallel sixths are one of the oldest and most reliable ways to harmonise a melody, which is why so much folk and country singing falls into them naturally.

Learn this properly

Chapter 5: Intervals

Common questions

How many semitones is a Major Sixth?
A Major Sixth spans 9 semitones: C – A. Count the semitones of any interval with the interval calculator.
What is the inversion of a major sixth?
The Minor Third — the two add up to an octave.
What is a 6 chord?
A major triad with a major sixth added above the root. It is brighter and less restless than a major seventh, which is why swing-era writing leans on it.
How do I play Major Sixth?
On guitar the handiest shape is Next string, B 1 · E 5, read as string and fret; the instrument panel draws it from any starting note with the other shapes. On the piano count 9 semitones up from any key, black keys included. Play the notes together for the harmonic form, one after the other for the melodic form.

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