Notes used in A♭ minor Dominant 7 Chord:
A♭ + C♭ + E♭ + G♭
minor Dominant 7 chords are played combining a root, minor (♭) third, perfect fifth, and minor (♭) seventh notes of the root note's major scale.
minor Dominant 7 Chord Formula:
1 + 3♭ + 5 + 7♭