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Guitar chords · Major 9th

A♭maj9 chord on guitar (Abmaj9)

A♭maj9 (A♭ major 9th) has five notes: A♭, C, E♭, G and B♭, the , 3, 5, 7 and 9.

Shapes

How to play A♭maj9

Strum a shape to hear it, or pick it one string at a time. R marks the ; the other numbers are the chord tones.

A♭maj9 has no common . Play it as the E shape at 4 or the A shape at fret 11. A keeps its fingering anywhere on the neck: slide it up or down and the , on the lowest played string, names the chord.

  • E shape · fret 4

    4fr×R7359A♭GCE♭B♭
  • A shape · fret 11

    10fr××R379A♭CGB♭
Name a shape you're holding: the chord finder

Notes and formula

What makes A♭maj9 major 9th

A major 9th chord adds the 9th to a major . It is even softer and more open than maj7, a favourite of neo-soul, jazz and ballads. Keep the 3rd, the 7th and the 9th; drop the 5th first.

  • 1Root: the note the chord is named after. Keep it.
  • 3Essential: makes the chord what it is. Never drop it.
  • 5Optional: drop it first when you run out of fingers.

The 3rd, the 7th and the 9th make A♭maj9 a major 9th chord; you can leave out the 5th.

  1. A♭Rroot
  2. C3essential
  3. E♭5optional
  4. G7essential
  5. B♭9essential
EADGBE0135791215A♭A♭A♭A♭A♭A♭A♭GB♭CE♭GB♭CE♭GB♭CE♭GB♭CE♭GB♭CE♭GB♭CE♭GB♭CGB♭CE♭G
  • A♭, the root
  • Other chord tones

A♭maj9 and G♯maj9 are the same chord with two names: same , same sound. Which one you see depends on the key the song is written in.

Keys

Keys with A♭maj9

A♭maj9 belongs to four keys: A♭ major (Imaj9), E♭ major (IVmaj9), F minor (IIImaj9) and C minor (VImaj9).

Numerals follow the key's own scale, so III, VI and VII in a minor key are its own major chords. A ♭ or ♯ in front marks a chord from outside the key. How Roman numerals work

Slash chords

A♭maj9 over another bass note

A keeps A♭maj9 on top and puts another note in the bass: the letter after the slash is the lowest note you play.

  • A♭maj9/C

    A♭maj9 with its 3rd, C, in the bass.

  • A♭maj9/E♭

    A♭maj9 with its 5th, E♭, in the bass.

  • A♭maj9/G

    A♭maj9 with its 7th, G, in the bass.

Questions

A♭maj9, in short

What notes are in the A♭maj9 chord?
A♭maj9 (A♭ major 9th) has five notes: A♭, C, E♭, G and B♭, the , 3, 5, 7 and 9.
How do you play A♭maj9 on guitar?
A♭maj9 has no common . Play it as the E shape at 4 or the A shape at fret 11.
What key is A♭maj9 in?
A♭maj9 belongs to four keys: A♭ major (Imaj9), E♭ major (IVmaj9), F minor (IIImaj9) and C minor (VImaj9).
Is A♭maj9 the same as G♯maj9?
Yes: same frets, same sound, different name. A♭maj9 is the spelling in A♭ major, E♭ major, F minor and C minor. No key on the circle spells it G♯maj9, so you will rarely see that name.
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