My Guitar Notes

Fmaj9 — F major ninth chord

A major seventh chord with the ninth added. The interval between the ninth and the major seventh is a minor second, which is what gives the chord its colour.

Symbol
Fmaj9
Root
F
Quality
Major ninth
Family
extended
Notes
F G A C E
Degree formula
1 9 3 5 7
Semitones from the root
0 2 4 7 11
Distinct pitch classes
5
Interval structure
Stacked from the root: 2 semitones, 2 semitones, 3 semitones, 4 semitones
Notation
Written maj9. A common tonic chord in jazz and in contemporary soul.
Key
F · F major / D minor key signature

Formula

The chord tones in order from the root, with the interval each one forms above it.

DegreeNoteSemitonesInterval from the root
1F0Perfect unison
9G2Major second
3A4Major third
5C7Perfect fifth
7E11Major seventh

Inversions

An inversion is the same set of notes with a different one in the bass. The last column gives the distance of each note above the bass note, in semitones.

InversionBass noteDegree in the bassNotes above the bassSemitones above the bass
root positionF1F – G – A – C – E0 2 4 7 11
first inversionG9G – A – C – E – F0 2 5 9 10
second inversionA3A – C – E – F – G0 3 7 8 10
third inversionC5C – E – F – G – A0 4 5 7 9
fourth inversionE7E – F – G – A – C0 1 3 5 8

Playable voicings

These shapes were found by searching the fretboard of a standard-tuned guitar (E A D G B E) rather than copied from a chord book. The search allows every string to sound or to be muted, rejects any shape with a muted string between two sounding strings, rejects any shape whose fretted notes span more than four frets (a five-fret window), requires every chord tone to be present, and then sorts what remains with root-position shapes first and the most compact, lowest shapes next. The shapes shown are the first six of that ordering; other orderings are possible at the same frets.

#Shape (low string first)NotesDegreesBassSpan (frets)Sounding strings
11-0-2-0-1-0F A E G C E1 3 7 9 5 7F26
21-0-2-0-1-1F A E G C F1 3 7 9 5 1F26
31-3-2-2-1-3F C E A C G1 5 7 3 5 9F26
413-12-14-12-13-12F A E G C E1 3 7 9 5 7F26
513-12-14-12-13-13F A E G C F1 3 7 9 5 1F26
613-15-14-14-13-15F C E A C G1 5 7 3 5 9F26

Shape numbers run from the lowest string to the highest, so the left-hand number is the sixth string (low E) in standard tuning. Multiple shapes are listed because a chord can be voiced several ways, and because a lower position is not always the better sounding one.

Related chords and scales

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