Guitar chords · Dominant 7th sharp 9th
A7♯9 chord on guitar (A7#9)
A7♯9 (A A major chord with a minor 7th added, such as G7. It is the V7 of a key and pulls strongly to the I chord. sharp 9th) has five notes: A, C♯, E, G and B♯ (played as C), the The note a chord is named after and built up from. C is the root of C, Cm and C7., 3, 5, ♭7 and ♯9.
Shapes
How to play A7♯9
Strum a shape to hear it, or pick it one string at a time. R marks the The note a chord is named after and built up from. C is the root of C, Cm and C7.; the other numbers are the chord tones.
A7♯9 has no common A chord played near the nut that uses some unfretted strings, such as the open G, C or Em.. Play it as the E shape at The metal strips across the neck, and the spaces between them. Each fret raises a string by one half step. 5 or the A shape at fret 12. A A chord or scale fingering with no open strings. Slide it up or down the neck and it changes its root but not its type: a major shape stays major. keeps its fingering anywhere on the neck: slide it up or down and the The note a chord is named after and built up from. C is the root of C, Cm and C7., on the lowest played string, names the chord.
E shape · fret 5
A shape · fret 12
Notes and formula
What makes A7♯9 dominant 7th sharp 9th
A 7♯9 chord is a A major chord with a minor 7th added, such as G7. It is the V7 of a key and pulls strongly to the I chord. chord with a raised 9th on top. The ♯9 sounds like a minor 3rd against the major 3rd, a deliberate clash; the chord is known as the Hendrix chord, at home in blues, funk and rock.
- 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 A7♯9 a A major chord with a minor 7th added, such as G7. It is the V7 of a key and pulls strongly to the I chord. sharp 9th chord; you can leave out the 5th.
- ARroot
- C♯3essential
- E5optional
- G♭7essential
- B♯♯9essential
- A, the root
- Other chord tones
As a V chord, A7♯9 resolves to D or, more often, Dm: the V7♯9–i move.
Keys
Keys with A7♯9
A7♯9 fits no major or minor key: its ♯9 (B♯, usually written C) rubs against the major 3rd on purpose. It is the sound of blues, funk and rock, played as the I chord of a blues in A or as a V chord resolving to D.
Slash chords
A7♯9 over another bass note
A A chord with a different note in the bass, written after a slash: C/E is a C chord with E as its lowest note. The letter after the slash is the bass. keeps A7♯9 on top and puts another note in the bass: the letter after the slash is the lowest note you play.
- A7♯9/C♯
A7♯9 with its 3rd, C♯, in the bass.
- A7♯9/E
A7♯9 with its 5th, E, in the bass.
- A7♯9/G
A7♯9 with its ♭7th, G, in the bass.
Same root
Other chords on A
Change one or two notes and the same The note a chord is named after and built up from. C is the root of C, Cm and C7. gives a different colour. Compare them by ear.
- A major
- Am minor
- A7 dominant 7th
- Amaj7 major 7th
- Am7 minor 7th
- Asus2 suspended 2nd
- Asus4 suspended 4th
- A6 major 6th
- Am6 minor 6th
- Aadd9 add 9
- A9 dominant 9th
- Amaj9 major 9th
- Am9 minor 9th
- A13 dominant 13th
- Amaj13 major 13th
- Am11 minor 11th
- A° diminished
- Am7♭5 half-diminished 7th
- A°7 diminished 7th
- A+ augmented
- A5 power chord
- A7sus4 dominant 7th suspended 4th
- Am(maj7) minor major 7th
- A6/9 six-nine
- Am(add9) minor add 9
Questions
A7♯9, in short
- What notes are in the A7♯9 chord?
- A7♯9 (A A major chord with a minor 7th added, such as G7. It is the V7 of a key and pulls strongly to the I chord. sharp 9th) has five notes: A, C♯, E, G and B♯ (played as C), the The note a chord is named after and built up from. C is the root of C, Cm and C7., 3, 5, ♭7 and ♯9.
- How do you play A7♯9 on guitar?
- A7♯9 has no common A chord played near the nut that uses some unfretted strings, such as the open G, C or Em.. Play it as the E shape at The metal strips across the neck, and the spaces between them. Each fret raises a string by one half step. 5 or the A shape at fret 12.
- What key is A7♯9 in?
- A7♯9 fits no major or minor key: its ♯9 (B♯, usually written C) rubs against the major 3rd on purpose. It is the sound of blues, funk and rock, played as the I chord of a blues in A or as a V chord resolving to D.