Tool
The harmonic field of A♯ minor 7 sharps 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. B♭ 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. 
