semicord

Absus2 Ab suspended second chord

Notes
Ab Bb Eb
Formula
1 2 5
Semitones
0 2 7 above the root
Also written
G#sus2 (G# A# D#)

Ab to Bb is a major second (2 semitones), Bb to Eb is a perfect fourth (5 semitones). The third is replaced by the second (Bb), so the chord is neither major nor minor. The same three keys with Eb in the bass read as Ebsus4.

Absus2 on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4AbBbC5Eb

Root position from Ab4: Ab4, Bb4, Eb5. Middle C is C4.

Absus2 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 Ab as its lowest note.

11fr×AbAbEbEbAbAbBbBbEbEb
A-shape barre, root on the A string at fret 11
x 11 13 13 11 11 (low E to high e)
Sounds Ab3 Eb4 Ab4 Bb4 Eb5

The barre shapes 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 suspended second chords on other roots.

Inversions of Absus2

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 positionAb Bb EbAbsus2
1st inversionBb Eb AbBb7sus4 (also read as Absus2/Bb)
2nd inversionEb Ab BbEbsus4 (also read as Absus2/Eb)

Where Absus2 fits

A sus chord has no third, so it is neither major nor minor and has no fixed place in a key. In Absus2 the second, Bb, usually rises to the major or minor third or falls back to the root Ab; it is also often left unresolved as a colour, especially on guitar.