A-flat major
| Relative key | F minor | 
|---|---|
| Parallel key | A-flat minor | 
| Dominant key | E-flat major | 
| Subdominant key | D-flat major | 
| Component pitches | |
| A♭, B♭, C, D♭, E♭, F, G | |
A-flat major is a major scale based on A♭, with the pitches A♭, B♭, C, D♭, E♭, F, and G. Its key signature has four flats.
The A-flat major scale is:
Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary. The A-flat harmonic major and melodic major scales are
Its relative minor is F minor. Its parallel minor, A-flat minor, is usually written instead as the enharmonic key of G-sharp minor, since A-flat minor, which contains seven flats, is not normally used. Its enharmonic, G-sharp major, with eight sharps, including the F, has a similar problem, and so A-flat major is often used as the parallel major for G-sharp minor. (The same enharmonic situation also occurs with the keys of D-flat major and C-sharp minor, and to some extent, the keys of G-flat major and F-sharp minor).)