A7 Chord on Piano
The A7 chord contains A, D♭, E and G — 4 notes. Every one is marked across three octaves of the keyboard below, labelled with note names and with interval numbers.
- Root
- Major 3rd
- Perfect 5th
- Minor 7th
| Degree | 1 | 3 | 5 | ♭7 |
|---|---|---|---|---|
| Note | A | D♭ | E | G |
| Interval | Root | Major 3rd | Perfect 5th | Minor 7th |
Note names
Interval numbers
Scales containing A Dominant 7th
| Major (Ionian) | D |
| Natural Minor (Aeolian) | B |
| Dorian | E |
| Phrygian | F# |
| Lydian | G |
| Mixolydian | A |
| Locrian | D♭ |
| Harmonic Lydian (Lydian ♭6) | F |
| Harmonic Minor | D |
| Melodic Minor | D E |
| Melodic Minor ♯4 | G B♭ |
| Gypsy Minor (Hungarian Minor) | D♭ |
| Dominant Pentatonic (Mixolydian Pentatonic) | A |
| Minor Sixth Pentatonic | E |
| Dominant Diminished (M2) | C E♭ F# A |
| Tcherepnin (M3) | E♭ G B |
Circle of fifths
Frequently asked questions
What notes are in the A7 chord?
A, D♭, E and G. That is 4 notes.
How is the A7 chord built?
From a root of A: D♭ is the major 3rd, E is the perfect 5th and G is the minor 7th.
Which scales contain the A7 chord?
D Major (Ionian), B Natural Minor (Aeolian), E Dorian and F# Phrygian, among others. Every note of the A7 chord is in those, so they can be played over it.
Which smaller chords are inside the A7 chord?
A Major, D♭ Diminished, A Power (5) and G Sus2 ♭5. Each uses only notes the A7 chord already contains.
Practice this on your own piano
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