Chords belonging to the key of A flat major

The chart below lists the common chords in the key of A flat major. The first row are triads and four note voicings in the second row. Roman numerals indicate each chords position relative to the scale.

• A flat major scale notes: Ab Bb C Db Eb F G
• Major key chord sequence: Maj min min Maj Maj min dim

Note: The same chords and scale notes are used for the key of G sharp major but this key isn't used often because of notation difficulties caused by the need for a double sharp.

I	ii	iii	IV	V	vi	vii
Abmaj	Bbmin	Cmin	Dbmaj	Ebmaj	Fmin	Gdim
Abmaj7	Bbmin7	Cmin7	Dbmaj7	Eb7	Fmin7	Gm7b5

Common chord progressions in A flat major
I - IV - V	Ab - Dbmaj - Ebmaj
I - vi - IV - V	Ab - Fmin - Dbmaj - Ebmaj
II - V - I	Bbmin7 - Eb7 - AbM7