Aalt guitar chord
An open string left ringing against a fretted grip. Because it costs no finger, it sounds a note the closed shape has none left for -- a tension on top, or a pedal root underneath. Either a familiar grip with open strings added, or a shape so sparse the open strings carry the chord. These belong to their key rather than to a shape, so D, A, G and E have many and Eb a handful.
- Tap a note to hear it
- Arrows change position
- Fingers, notes or intervals
- Play the chord
About Aalt — open string voicings
Aalt is A, C#, E#, G and Bb — A7 with every tension it can carry altered at once.
It sounds maximum tension, barely holding together. Not one chord but an instruction: take the root, third and flat seventh, add any two alterations, and let the rest go.
Aalt notes and formula
| A | C# | E# | G | Bb |
|---|---|---|---|---|
| 1 | 3 | ♯5 | ♭7 | ♭9 |
Altered dominant — the hardest pull available.
Also written A7alt, A7altered or A altered dominant. The same chord either way; which spelling you meet depends on who wrote the chart.
How to play Aalt
An open string left ringing against a fretted grip. It costs no finger, so it can sound a note the closed shape has none left for: a tension on top, or a pedal root underneath.
These belong to their key rather than to a shape: they cannot be moved up the neck. D, A, G and E have many; E♭ has a handful.
Aalt has 1 of them, only on strings 5-4-3-2-1, all of them at the 2nd fret — all in one inversion, so the bass note never moves. The one to learn first is the A shape at the 2nd fret, which is the easiest grip here.
Start with x0122x — 1 open string and only 3 fretted notes. 2 of the 10 shapes here sit in open position. None of them needs a barre. Together they cover the neck from the 1st fret to the 14th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| x0122x | open position | A, root position | C# | 1 open string |
| x07645 | open position | A, root position | A | 1 open string |
| 54x645 | 4th fret | A, root position | A | all fretted |
| xx7645 | 4th fret | A, root position | A | all fretted |
| 5676x5 | 5th fret | A, root position | A | all fretted |
| x-x-7-8-10-9 | 7th fret | A, root position | C# | all fretted |
| x-0-11-8-10-9 | 8th fret | A, root position | C# | 1 open string |
| x-12-11-x-10-11 | 10th fret | A, root position | Eb | all fretted |
| x-12-11-14-14-11 | 11th fret | A, root position | Eb | all fretted |
| x-12-13-14-14-x | 12th fret | A, root position | C# | all fretted |
The same notes rebuilt from scratch give 8 shell and 15 rootless voicings, each on its own page.
Tensions. A shell of Aalt, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (D#).
How to use Aalt
Aalt is a dominant with its tension raised, so it still points at D — harder than a plain seventh does, because the altered tones sit a semitone from where they are going.
Voice by voice, Aalt → D. 4 voices move by a semitone, and one note is common to both chords.
| In Aalt | Moves | In D |
|---|---|---|
| A, the root | stays where it is | A, the fifth |
| C#, the major third | rises a semitone | D, the root |
| E#, the sharp fifth | rises a semitone | F#, the major third |
| G, the flat seventh | falls a semitone | F#, the major third |
| Bb, the flat ninth | falls a semitone | A, the fifth |
What to play over Aalt
Every note of Aalt is in A altered.
Chords near Aalt
Change one note of Aalt and you have Aaug7 (drop the flat ninth), Aaug9 (the flat ninth becomes a ninth) or A7b9 (the sharp fifth becomes a fifth).
Aalt is an altered chord — a dominant seventh with its fifth or ninth moved. Altered dominant chords on every root.
On Aalt’s sound and use this page follows Mark Levine, The Jazz Theory Book (Sher Music, 1995). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.