A 9th chord
A9 chord (also called Dominant 9th chord) for piano presented by keyboard diagrams.
Explanation: The A ninth is a five-note chord. Due to practical circumstances, however, the fifth (E) is often omitted and/or the chord is played inverted. The chord is often abbreviated as A9.
Omissions: A9(no3): A - E - G - B; A9(no5): A - C# - G - B.
Theory: The A ninth chord is constructed with a root, a major third, a perfect fifth, a minor seventh and a major ninth.
A9
Notes: A - C# - E - G - B
Ab9 chord ‹ Previous • Next › A#9 chord
+ Show inversions and voicings - Hide inversions
One of many possible inversions (A9/G)
Notes: A - E (left hand) G - B - C# (right hand)
Two-hand voicing
A9 inverted
One of many possible inversions (A9/G)
Notes: A - E (left hand) G - B - C# (right hand)
Two-hand voicing