A7b9b5 Chord
Chord Tones
| Interval | Note |
|---|---|
| Perfect 1st | A |
| Major 3rd | C# |
| Diminished 5th | D# |
| Minor 7th | G |
| Minor 9th | A# |
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Pentad (five-note chord) rooted on A（Chord Tones: A, C#, D#, G, A#）
| Interval | Note |
|---|---|
| Perfect 1st | A |
| Major 3rd | C# |
| Diminished 5th | D# |
| Minor 7th | G |
| Minor 9th | A# |
