Tool
The harmonic field of C♯ minor 4 sharps in the key signature. Click a degree to hear it, or hear the whole field.
Triads · natural minor C ♯ m i Tonic Diatonic D ♯ dim ii° Subdominant Diatonic E III Tonic Diatonic F ♯ m iv Subdominant Diatonic G ♯ m v Dominant Diatonic A VI Tonic Diatonic B VII Dominant Diatonic
Degree Symbol Notes Function i C ♯ m C♯ · E · G♯ Tonic ii° D ♯ dim D♯ · F♯ · A Subdominant III E E · G♯ · B Tonic iv F ♯ m F♯ · A · C♯ Subdominant v G ♯ m G♯ · B · D♯ Dominant VI A A · C♯ · E Tonic VII B B · D♯ · F♯ Dominant
Seventh chords · natural minor C ♯ m7 i7 Tonic Diatonic D ♯ m7 ♭5 iiø7 Subdominant Diatonic E maj7 IIImaj7 Tonic Diatonic F ♯ m7 iv7 Subdominant Diatonic G ♯ m7 v7 Dominant Diatonic A maj7 VImaj7 Tonic Diatonic B 7 VII7 Dominant Diatonic
Degree Symbol Notes Function i7 C ♯ m7 C♯ · E · G♯ · B Tonic iiø7 D ♯ m7 ♭5 D♯ · F♯ · A · C♯ Subdominant IIImaj7 E maj7 E · G♯ · B · D♯ Tonic iv7 F ♯ m7 F♯ · A · C♯ · E Subdominant v7 G ♯ m7 G♯ · B · D♯ · F♯ Dominant VImaj7 A maj7 A · C♯ · E · G♯ Tonic VII7 B 7 B · D♯ · F♯ · A Dominant
Triads · harmonic minor C ♯ m i Tonic Diatonic D ♯ dim ii° Subdominant Diatonic E aug III+ Tonic Diatonic F ♯ m iv Subdominant Diatonic G ♯ V Dominant Diatonic A VI Tonic Diatonic B ♯ dim vii° Dominant Diatonic
Degree Symbol Notes Function i C ♯ m C♯ · E · G♯ Tonic ii° D ♯ dim D♯ · F♯ · A Subdominant III+ E aug E · G♯ · B♯ Tonic iv F ♯ m F♯ · A · C♯ Subdominant V G ♯ G♯ · B♯ · D♯ Dominant VI A A · C♯ · E Tonic vii° B ♯ dim B♯ · D♯ · F♯ Dominant
Seventh chords · harmonic minor C ♯ m(maj7) imaj7 Tonic Diatonic D ♯ m7 ♭5 iiø7 Subdominant Diatonic E maj7 ♯5 IIImaj7#5 Tonic Diatonic F ♯ m7 iv7 Subdominant Diatonic G ♯ 7 V7 Dominant Diatonic A maj7 VImaj7 Tonic Diatonic B ♯ dim7 vii°7 Dominant Diatonic
Degree Symbol Notes Function imaj7 C ♯ m(maj7) C♯ · E · G♯ · B♯ Tonic iiø7 D ♯ m7 ♭5 D♯ · F♯ · A · C♯ Subdominant IIImaj7#5 E maj7 ♯5 E · G♯ · B♯ · D♯ Tonic iv7 F ♯ m7 F♯ · A · C♯ · E Subdominant V7 G ♯ 7 G♯ · B♯ · D♯ · F♯ Dominant VImaj7 A maj7 A · C♯ · E · G♯ Tonic vii°7 B ♯ dim7 B♯ · D♯ · F♯ · A Dominant
The notes are spelled in octave 4, from C♯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 E major Relative: the same key signature, in the other mode. C♯ major Parallel: the same tonic, in the other mode. C♯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. 
