Nashville Number System — Key of Ab
The complete NNS chart for Ab Major: all seven diatonic chords with Nashville numbers and Roman numerals.
Key
Nashville Number Chart — Key of Ab
| Degree | Nashville | Chord |
|---|---|---|
| 1 | 1 | Ab |
| 2 | 2m | Bbm |
| 3 | 3m | Cm |
| 4 | 4 | Db |
| 5 | 5 | Eb |
| 6 | 6m | Fm |
| 7 | 7dim | Gdim |
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Nashville Numbers in the Key of Ab Major
In the key of Ab Major, the seven diatonic chords are Ab, Bbm, Cm, Db, Eb, Fm, Gdim. In Nashville Number System notation, these chords are numbered by their scale degree: the tonic chord Ab is 1, the subdominant Db is 4, and the dominant Eb is 5. Minor chords use a lowercase “m” suffix — Bbm is 2m, Cm is 3m, and Fm is 6m. The diminished seventh degree, Gdim, is written 7dim.
NNS Reference Chart — Ab Major
Common Progressions in Ab Major — NNS Notation
The most common chord progression in Ab Major is I–V–vi–IV — Ab, Eb, Fm, Db — written in Nashville notation as 1–5–6m–4. Because the NNS uses numbers rather than chord names, this chart works verbatim in any key — a band calling out “1, 5, 6m, 4” knows exactly what to play regardless of the root key. Cross-reference with our chords in the key of Ab Major for the full diatonic chord set with Roman numeral analysis.
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