A-sus4b9 Suspended
The A-sus4b9 chord is built from the notes A – D – E – G – Bb.
Piano sound loads on first tap.
Also known as
A7sus4(b9)A7sus4b9
Chord tones, one by one
ARoot
Root
The fundamental note the chord is built on — A.
DThird
Suspended 4th
A perfect 4th replaces the third — tense, wants to resolve (sus4).
EFifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
GSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
BbExtension
Flat ninth (♭9)
A ♭9 — sharp, dissonant tension typical of altered dominant chords.
🎼 Related scales
🎹 Modal analysis
This chord implies the Phrygian scale; its characteristic note is the ♭9 / ♭2.
🎸 Genres
Flamenco · Metal · Modal jazz