# A Minor Major 7th piano chord (AmMaj7)

AmMaj7 contains A, C, E and G♯. A minor triad with the major seventh added on top. G♯ is a black key; A, C and E are white.

- Canonical page: https://piano.org/chords/minor-major-7th/a/
- Entity: chord:minor-major-7th:a
- Notes: A C E G♯
- Formula: 1 ♭3 5 7
- Intervals from root: P1, m3, P5, M7
- Interval stack (semitones): 3 4 4
- Also written: AmMaj7, AmMaj7, A minor major 7th
- Parameters: A440, 12-TET, 165 mm octave, spans centre to centre

## Construction

| Degree | Note | Interval from root | Semitones |
| --- | --- | --- | --- |
| 1 | A | Perfect unison | 0 |
| ♭3 | C | Minor third | 3 |
| 5 | E | Perfect fifth | 7 |
| 7 | G♯ | Major seventh | 11 |

## Fingering

Rest your right hand over the notes with finger 1 on A, finger 2 on C, finger 3 on E, finger 5 on G♯. The left hand mirrors it.
Right hand 1-2-3-5, left hand 5-3-2-1. Source: piano.org fingering method v1.

## Inversions

| Position | Bass | Notes in order | Figured bass | Span |
| --- | --- | --- | --- | --- |
| Root position | A | A3 C4 E4 G♯4 | 7 | 11 st, 151 mm |
| First inversion (AmMaj7/C) | C | C4 E4 G♯4 A4 | 6/5 | 9 st, 124 mm |
| Second inversion (AmMaj7/E) | E | E4 G♯4 A4 C5 | 4/3 | 8 st, 110 mm |
| Third inversion (AmMaj7/G♯) | G♯ | G♯4 A4 C5 E5 | 4/2 | 8 st, 110 mm |

## Voicings (10)

| Voicing | Notes | Span | Relation | Omits or adds |
| --- | --- | --- | --- | --- |
| Close, root position | A3 C4 E4 G♯4 | 11 st, 151 mm | identical | none |
| Close, first inversion | C4 E4 G♯4 A4 | 9 st, 124 mm | identical | none |
| Close, second inversion | E4 G♯4 A4 C5 | 8 st, 110 mm | identical | none |
| Close, third inversion | G♯4 A4 C5 E5 | 8 st, 110 mm | identical | none |
| Drop 2 | E3 A3 C4 G♯4 | 16 st, 220 mm | identical | none |
| Drop 3 | C3 A3 E4 G♯4 | 20 st, 275 mm | identical | none |
| Drop 2 and 4 | A2 E3 C4 G♯4 | 23 st, 316 mm | identical | none |
| Shell, root 7 ♭3 | A2 G♯3 C4 | 15 st, 206 mm | subset | omits E |
| Guide tones, ♭3 and 7 | C4 G♯4 | 8 st, 110 mm | subset | omits A and E |
| Rootless close | C4 E4 G♯4 | 8 st, 110 mm | subset | omits A |

## One-edit neighbors

| Becomes | Edit | Changes | Common tones |
| --- | --- | --- | --- |
| Am | 1 ♭3 5 | drops G♯ | 3 |
| Amaj7 | 1 3 5 7 | C becomes C♯ | 3 |
| Am7 | 1 ♭3 5 ♭7 | G♯ becomes G | 3 |
| Am6 | 1 ♭3 5 6 | G♯ becomes F♯ | 3 |
| Amaj9 | 1 3 5 7 9 | C becomes C♯, B | 3 |
| Am9 | 1 ♭3 5 ♭7 9 | G♯ becomes G, B | 3 |
| A | 1 3 5 | C, G♯ becomes C♯ | 2 |
| Adim | 1 ♭3 ♭5 | E, G♯ becomes E♭ | 2 |
| Asus2 | 1 2 5 | C, G♯ becomes B | 2 |
| Asus4 | 1 4 5 | C, G♯ becomes D | 2 |
| A7 | 1 3 5 ♭7 | C, G♯ becomes C♯, G | 2 |
| Am7♭5 | 1 ♭3 ♭5 ♭7 | E, G♯ becomes E♭, G | 2 |

## Set theory

- Absolute pitch classes: {9, 0, 4, 8}
- Relative pitch classes: [0, 3, 7, 11]
- Normal order: [8, 9, 0, 4]
- Prime form: (0148)
- Forte number: 4-19
- Interval vector: <101310>

## Frequencies (close root position)

| Note | MIDI | Frequency |
| --- | --- | --- |
| A3 | 57 | 220.00 Hz |
| C4 | 60 | 261.63 Hz |
| E4 | 64 | 329.63 Hz |
| G♯4 | 68 | 415.30 Hz |

## Questions and answers

### What notes are in AmMaj7?

AmMaj7 contains A, C, E and G♯. The formula is 1, ♭3, 5, 7.

### How do you play AmMaj7 on piano?

Play A, C, E and G♯ together. Right hand fingers 1, 2, 3, 5; left hand 5, 3, 2, 1. G♯ is a black key; A, C and E are white.

### What are the inversions of AmMaj7?

4 positions: root position A C E G♯, AmMaj7/C, AmMaj7/E, AmMaj7/G♯.

### What is the difference between AmMaj7 and Am?

Drops G♯. 3 of the notes are shared.

### What is an easy AmMaj7 for small hands?

The close, second inversion voicing, E4 G♯4 A4 C5, spans 8 semitones or about 110 mm.

### What are the frequencies of AmMaj7?

From A3 at A440 in 12-TET: 220.00, 261.63, 329.63, 415.30 Hz.

### What is the set class of AmMaj7?

Prime form (0148), Forte 4-19, interval vector &lt;101310&gt;.

### How do I transpose AmMaj7 to another key?

Keep the 1, ♭3, 5, 7 formula on the new root. CmMaj7 is C, E♭, G, B; C♯mMaj7 is C♯, E, G♯, B♯.

## Provenance

Every derived value above is computed by the piano.org theory kernel from the root, the quality and the stated parameters. Nothing is hand-entered per chord.

Machine record: https://piano.org/api/knowledge/v1/entities/chord:minor-major-7th:a
Last reviewed: 2026-08-12