Tool
The harmonic field of A♭ minor 7 flats in the key signature. Click a degree to hear it, or hear the whole field.
Triads · natural minor A ♭ m i Tonic Diatonic B ♭ dim ii° Subdominant Diatonic C ♭ III Tonic Diatonic D ♭ m iv Subdominant Diatonic E ♭ m v Dominant Diatonic F ♭ VI Tonic Diatonic G ♭ VII Dominant Diatonic
Degree Symbol Notes Function i A ♭ m A♭ · C♭ · E♭ Tonic ii° B ♭ dim B♭ · D♭ · F♭ Subdominant III C ♭ C♭ · E♭ · G♭ Tonic iv D ♭ m D♭ · F♭ · A♭ Subdominant v E ♭ m E♭ · G♭ · B♭ Dominant VI F ♭ F♭ · A♭ · C♭ Tonic VII G ♭ G♭ · B♭ · D♭ Dominant
Seventh chords · natural minor A ♭ m7 i7 Tonic Diatonic B ♭ m7 ♭5 iiø7 Subdominant Diatonic C ♭ maj7 IIImaj7 Tonic Diatonic D ♭ m7 iv7 Subdominant Diatonic E ♭ m7 v7 Dominant Diatonic F ♭ maj7 VImaj7 Tonic Diatonic G ♭ 7 VII7 Dominant Diatonic
Degree Symbol Notes Function i7 A ♭ m7 A♭ · C♭ · E♭ · G♭ Tonic iiø7 B ♭ m7 ♭5 B♭ · D♭ · F♭ · A♭ Subdominant IIImaj7 C ♭ maj7 C♭ · E♭ · G♭ · B♭ Tonic iv7 D ♭ m7 D♭ · F♭ · A♭ · C♭ Subdominant v7 E ♭ m7 E♭ · G♭ · B♭ · D♭ Dominant VImaj7 F ♭ maj7 F♭ · A♭ · C♭ · E♭ Tonic VII7 G ♭ 7 G♭ · B♭ · D♭ · F♭ Dominant
Triads · harmonic minor A ♭ m i Tonic Diatonic B ♭ dim ii° Subdominant Diatonic C ♭ aug III+ Tonic Diatonic D ♭ m iv Subdominant Diatonic E ♭ V Dominant Diatonic F ♭ VI Tonic Diatonic G dim vii° Dominant Diatonic
Degree Symbol Notes Function i A ♭ m A♭ · C♭ · E♭ Tonic ii° B ♭ dim B♭ · D♭ · F♭ Subdominant III+ C ♭ aug C♭ · E♭ · G Tonic iv D ♭ m D♭ · F♭ · A♭ Subdominant V E ♭ E♭ · G · B♭ Dominant VI F ♭ F♭ · A♭ · C♭ Tonic vii° G dim G · B♭ · D♭ Dominant
Seventh chords · harmonic minor A ♭ m(maj7) imaj7 Tonic Diatonic B ♭ m7 ♭5 iiø7 Subdominant Diatonic C ♭ maj7 ♯5 IIImaj7#5 Tonic Diatonic D ♭ m7 iv7 Subdominant Diatonic E ♭ 7 V7 Dominant Diatonic F ♭ maj7 VImaj7 Tonic Diatonic G dim7 vii°7 Dominant Diatonic
Degree Symbol Notes Function imaj7 A ♭ m(maj7) A♭ · C♭ · E♭ · G Tonic iiø7 B ♭ m7 ♭5 B♭ · D♭ · F♭ · A♭ Subdominant IIImaj7#5 C ♭ maj7 ♯5 C♭ · E♭ · G · B♭ Tonic iv7 D ♭ m7 D♭ · F♭ · A♭ · C♭ Subdominant V7 E ♭ 7 E♭ · G · B♭ · D♭ Dominant VImaj7 F ♭ maj7 F♭ · A♭ · C♭ · E♭ Tonic vii°7 G dim7 G · B♭ · D♭ · F♭ Dominant
The notes are spelled in octave 4, from A♭4. The function is assigned by degree — tonic on I, III and VI; subdominant on II and IV; dominant on V and VII — which is how the harmonic field is taught. Context can change that reading, and the tool reports the degree.
Related keys C♭ major Relative: the same key signature, in the other mode. A♭ major Parallel: the same tonic, in the other mode. A♭m in the dictionary The tonic triad: notes, staff, keyboard and guitar shapes. Read about Diatonic harmony The chords that arise from stacking thirds on each degree of a scale, and why each quality lands where it does. Harmonic function The role each degree plays — tonic, subdominant, or dominant — and the tension that moves one to the next. Roman numeral analysis The notation that describes a chord by the position it occupies in the key rather than by the note it sits on. Minor key harmony The minor harmonic field, which is not one field: the three minor scales produce different chords on the same degree. 
