semicord

Amaj7 A major seventh chord

Notes
A C# E G#
Formula
1 3 5 7
Semitones
0 4 7 11 above the root
Other symbols
AM7, AΔ7

A to C# is a major third (4 semitones), C# to E is a minor third (3 semitones), E to G# is a major third (4 semitones). A major triad plus the note a half step below the root (G#). It has no tritone, so it sounds settled and soft rather than restless like A7.

Amaj7 on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5G#5Bb5C4AC5C#EG#

Root position from A4: A4, C#5, E5, G#5. Middle C is C4.

Amaj7 on the guitar

Standard tuning (E A D G B E). Strings run low E on the left to high e on the right, frets downwards; × is a muted string, ○ an open string, and each dot shows the note it sounds, with the root in blue-green. Every shape below has A as its lowest note.

×AEEG#G#C#C#E
Open position (A-shape)
x 0 2 1 2 0 (low E to high e)
Sounds A2 E3 G#3 C#4 E4
5frAA×G#G#C#C#EE×
E-shape, root on the E string at fret 5
5 x 6 6 5 x (low E to high e)
Sounds A2 G#3 C#4 E4

The E-shape and A-shape grips are movable: an E-shape chord's root is the note under your first finger on the low E string, an A-shape chord's root is the note on the A string. Slide the same grip up or down to play major seventh chords on other roots.

Amaj7 on the ukulele

Standard ukulele tuning is G C E A, drawn with the G string on the left and frets downwards, as ukulele chord charts show it. The G string is tuned higher than the C string (G4 above middle C, a fifth over C4), so the lowest note you hear is usually on the C or E string, not on the G string, and a shape can sound as an inversion even when its root is on the G string. All four strings are strummed, so every string plays a chord tone; the root is in blue-green.

G#G#C#C#EA
Open position
1100 (G C E A)
Sounds G#4 C#4 E4 A4
Lowest note C#4, so the chord finder reads it as Amaj7/C# (first inversion).
AAEEG#G#C#C#
At fret 2
2444 (G C E A)
Sounds A4 E4 G#4 C#5
Lowest note E4, so the chord finder reads it as Amaj7/E (second inversion).

Inversions of Amaj7

An inversion puts a note other than the root in the bass. The name is what semicord's chord finder calls those notes played bottom to top; a slash name like C/E means a C chord with E in the bass.

PositionNotes, bass firstNamedListen
Root positionA C# E G#Amaj7
1st inversionC# E G# AAmaj7/C#
2nd inversionE G# A C#Amaj7/E
3rd inversionG# A C# EA/G# (also read as Amaj7/G#)

Where Amaj7 fits

Amaj7 is Imaj7 in A major, IVmaj7 in E major.

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