Tool
The harmonic field of D major 2 sharps in the key signature. Click a degree to hear it, or hear the whole field.
Triads D I Tonic Diatonic E m ii Subdominant Diatonic F ♯ m iii Tonic Diatonic G IV Subdominant Diatonic A V Dominant Diatonic B m vi Tonic Diatonic C ♯ dim vii° Dominant Diatonic
Hear the field Degree Symbol Notes Function I D D · F♯ · A Tonic ii E m E · G · B Subdominant iii F ♯ m F♯ · A · C♯ Tonic IV G G · B · D Subdominant V A A · C♯ · E Dominant vi B m B · D · F♯ Tonic vii° C ♯ dim C♯ · E · G Dominant
Seventh chords D maj7 Imaj7 Tonic Diatonic E m7 ii7 Subdominant Diatonic F ♯ m7 iii7 Tonic Diatonic G maj7 IVmaj7 Subdominant Diatonic A 7 V7 Dominant Diatonic B m7 vi7 Tonic Diatonic C ♯ m7 ♭5 viiø7 Dominant Diatonic
Hear the field Degree Symbol Notes Function Imaj7 D maj7 D · F♯ · A · C♯ Tonic ii7 E m7 E · G · B · D Subdominant iii7 F ♯ m7 F♯ · A · C♯ · E Tonic IVmaj7 G maj7 G · B · D · F♯ Subdominant V7 A 7 A · C♯ · E · G Dominant vi7 B m7 B · D · F♯ · A Tonic viiø7 C ♯ m7 ♭5 C♯ · E · G · B Dominant
The notes are spelled in octave 4, from D4. 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 B minor Relative: the same key signature, in the other mode. D minor Parallel: the same tonic, in the other mode. D 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.