Chord · 9ths
Amaj9♭5 — A Major 9th ♭5
Amaj9♭5 is the A major 9th ♭5 chord. It is built on the root A with major 3rd (C♯), diminished 5th (E♭), major 7th (G♯) and major 9th (B) above it — the formula 1 3 ♭5 7 9, sounding the notes A C♯ E♭ G♯ B. On the piano it sits at A (octave 3) and above in the library's voicing; the same 5 notes in any octave are still Amaj9♭5.
- Root
- A
- Quality
- Major 9th ♭5
- Formula
- 1 3 ♭5 7 9
- Notes
- A C♯ E♭ G♯ B
On the keyboard
The notes of Amaj9♭5
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | A | root | A3 |
| 3 | C♯ | major 3rd | C♯4 |
| ♭5 | E♭ | diminished 5th | E♭4 |
| 7 | G♯ | major 7th | G♯4 |
| 9 | B | major 9th | B4 |
Other 9ths on A
Major 9th ♭5 chords on every root
Part of the chord reference. See also the scales and the keys.